Employee Benefit Plans - Status of Options Related to Stock Plans (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |||
Options Outstanding Beginning Balance | 1,518,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber | ||
Options Outstanding Exercised | (179,000)us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised | ||
Options Outstanding Forfeited | (275,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod | ||
Options Outstanding Ending Balance | 1,064,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber | 1,518,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber | |
Options Outstanding Exercisable | 1,064,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber | ||
Weighted Average Exercise Price Per Share, Beginning Balance | $ 18.83us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice | ||
Weighted Average Exercise Price Per Share, Exercised | $ 18.33us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice | ||
Weighted Average Exercise Price Per Share, Forfeited | $ 23.87us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice | ||
Weighted Average Exercise Price Per Share, Ending Balance | $ 17.62us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice | $ 18.83us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice | |
Weighted Average Exercise Price Per Share, Exercisable | $ 17.62us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice | ||
Weighted Average Remaining Contractual Term, Beginning Balance | 2 years 2 months 12 days | 2 years 6 months | |
Weighted Average Remaining Contractual Term, Exercisable | 2 years 2 months 12 days | ||
Aggregate Intrinsic Value, Beginning Balance | $ 9,831us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue | ||
Aggregate Intrinsic Value, Ending Balance | 10,444us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue | 9,831us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue | |
Aggregate Intrinsic Value, Exercisable | 10,444us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1 | ||
Intrinsic value of options exercised | 1,187us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue | 1,657us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue | 7,427us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue |
Fair value of options vested | $ 426us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1 | ||
Minimum [Member] | |||
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |||
Exercise Price Per Share, Beginning Balance |
$ 1.81sah_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansOutstandingExercisePriceRange / us-gaap_RangeAxis = us-gaap_MinimumMember |
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Exercise Price Per Share, Exercised |
$ 1.81sah_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisedExercisePriceRangeLowerRangeLimit / us-gaap_RangeAxis = us-gaap_MinimumMember |
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Exercise Price Per Share, Forfeited |
$ 18.73sah_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansForfeitedExercisePriceRangeLowerRangeLimit / us-gaap_RangeAxis = us-gaap_MinimumMember |
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Exercise Price Per Share, Ending Balance |
$ 1.81sah_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansOutstandingExercisePriceRange / us-gaap_RangeAxis = us-gaap_MinimumMember |
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Exercise Price Per Share, Exercisable |
$ 1.81sah_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisableExercisePriceRangeLowerRangeLimit / us-gaap_RangeAxis = us-gaap_MinimumMember |
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Maximum [Member] | |||
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |||
Exercise Price Per Share, Beginning Balance |
$ 30.07sah_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansOutstandingExercisePriceRange / us-gaap_RangeAxis = us-gaap_MaximumMember |
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Exercise Price Per Share, Exercised |
$ 23.42sah_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisedExercisePriceRangeLowerRangeLimit / us-gaap_RangeAxis = us-gaap_MaximumMember |
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Exercise Price Per Share, Forfeited |
$ 25.05sah_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansForfeitedExercisePriceRangeLowerRangeLimit / us-gaap_RangeAxis = us-gaap_MaximumMember |
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Exercise Price Per Share, Ending Balance |
$ 25.05sah_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansOutstandingExercisePriceRange / us-gaap_RangeAxis = us-gaap_MaximumMember |
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Exercise Price Per Share, Exercisable |
$ 23.42sah_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisableExercisePriceRangeLowerRangeLimit / us-gaap_RangeAxis = us-gaap_MaximumMember |
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- Definition
Share based compensation shares authorized under stock option plans exercisable exercise price range lower range limit. No definition available.
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- Definition
Share based compensation shares authorized under stock option plans exercised exercise price range lower range limit. No definition available.
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- Definition
Share based compensation shares authorized under stock option plans forfeited exercise price range lower range limit. No definition available.
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- Definition
Share based compensation shares authorized under stock option plans outstanding exercise price range. No definition available.
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- Details
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- Definition
Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average price at which option holders acquired shares when converting their stock options into shares. No definition available.
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- Definition
Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. No definition available.
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- Definition
Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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