v3.8.0.1

Stock-Based Compensation - Summary of Share Based Compensation Expense (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Stock-based compensation expense: |  |  |  |
Total stock-based compensation expense | $ 1,271 | $ 1,454 | $ 3,074 | $ 4,349
Time-based Restricted Units [Member] |  |  |  |
Stock-based compensation expense: |  |  |  |
Total stock-based compensation expense | 582 | 631 | 1,678 | 1,847
Performance-based Restricted Units [Member] |  |  |  |
Stock-based compensation expense: |  |  |  |
Total stock-based compensation expense | $ 689 | $ 823 | $ 1,396 | $ 2,502

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- Definition The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- Details
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