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Revised Previously Reported Consolidated Statements of Cash Flows (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Condensed Cash Flow Statements, Captions [Line Items]        
Net cash provided by operating activities $ 125,568 $ 65,946 $ 68,725 $ 49,128
Net cash used in investing activities (8,220) (58,458) (11,596) (12,726)
Net cash used in financing activities 2,194 (20,271) (19,710) (29,493)
Net increase (decrease) in cash, cash equivalents, and restricted cash 119,542 (12,783) [1] 37,419 [1] 6,909 [1]
EFFECT OF EXCHANGE RATE CHANGES (521) (953) (1,111) 166
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, BEGINNING OF YEAR [1] 202,156 215,892 179,584 172,509
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, END OF YEAR 321,177 202,156 [1] 215,892 [1] 179,584 [1]
As Reported        
Condensed Cash Flow Statements, Captions [Line Items]        
Net cash provided by operating activities   65,946 68,725 49,128
Net cash used in investing activities   (58,414) (15,413) (12,815)
Net cash used in financing activities   (20,271) (19,710) (29,493)
Net increase (decrease) in cash, cash equivalents, and restricted cash [1]   (12,739) 33,602 6,820
EFFECT OF EXCHANGE RATE CHANGES   (953) (1,111) 166
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, BEGINNING OF YEAR [1] 180,519 194,211 161,720 154,734
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, END OF YEAR [1]   180,519 194,211 161,720
Adjustment        
Condensed Cash Flow Statements, Captions [Line Items]        
Net cash used in investing activities   (44) 3,817 89
Net increase (decrease) in cash, cash equivalents, and restricted cash [1]   (44) 3,817 89
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, BEGINNING OF YEAR [1] $ 21,637 21,681 17,864 17,775
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, END OF YEAR [1]   $ 21,637 $ 21,681 $ 17,864
[1] The restricted cash is only included in the amount of "as adjusted" item.