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Revised Previously Reported Consolidated Statements of Cash Flows (Detail) - USD ($) $ in Thousands | 12 Months Ended
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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.

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- Definition Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49171198&loc=d3e33268-110906 + Details
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- Definition Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3574-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585 + Details
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- Definition Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3574-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585 + Details
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