Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Accumulated Other Comprehensive Income (Loss) (Parenthetical) (Detail)

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Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Accumulated Other Comprehensive Income (Loss) (Parenthetical) (Detail)
$ in Thousands
3 Months Ended
Mar. 31, 2017
USD ($)
Equity [Abstract]  
Other comprehensive income (loss) before reclassifications, tax benefit $ 337
Amounts reclassified out of accumulated other comprehensive income (loss), tax expense $ 462