XML 91 R79.htm IDEA: XBRL DOCUMENT v3.4.0.3
Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]      
Balance, beginning of year $ 4,655 $ 5,815 $ 3,520
Increases in tax positions taken in current year 2,337 446 2,947
Decrease in tax position taken in prior year primarily related to the resolution of tax audit (1,353) (1,606) (652)
Balance, end of year $ 5,639 $ 4,655 $ 5,815