Annual report pursuant to Section 13 and 15(d)

Income Taxes - Summary of Changes in Liability Related to Unrecognized Tax Benefits (Detail)

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Income Taxes - Summary of Changes in Liability Related to Unrecognized Tax Benefits (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Tax Disclosure [Abstract]      
Unrecognized tax benefit liability, Beginning Balance $ 9,097 $ 13,689 $ 22,535
Prior period positions:      
Increases 409 35 684
Decreases (233) (1,101)  
Increases from current period positions 799 1,155 1,498
Settlements (1,721) (2,924) (9,391)
Lapse of statute of limitations (1,164) (1,275) (1,175)
Other (494) (482) (462)
Unrecognized tax benefit liability, Ending Balance $ 6,693 $ 9,097 $ 13,689