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Stock-Based Awards - Summary of Stock Options Outstanding (Detail) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2015 USD ($) $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Number Outstanding at December 31, 2015 | shares | 1,544,597
Weighted- Average Remaining Contractual Life in Years | 3 years 6 months
Weighted- Average Exercise Price, option outstanding | $ 2.62
Number Exercisable at December 31, 2015 | shares | 1,469,597
Weighted- Average Exercise Price, option exercisable | $ 2.50
Aggregate Intrinsic Value at December 31, 2015 | $ | $ 19,370
Range One [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Lower range limit | $ 0.70
Upper range limit | $ 0.70
Number Outstanding at December 31, 2015 | shares | 435,000
Weighted- Average Remaining Contractual Life in Years | 3 years 1 month 6 days
Weighted- Average Exercise Price, option outstanding | $ 0.70
Number Exercisable at December 31, 2015 | shares | 435,000
Weighted- Average Exercise Price, option exercisable | $ 0.70
Aggregate Intrinsic Value at December 31, 2015 | $ | $ 6,516
Range Two [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Lower range limit | $ 1.07
Upper range limit | $ 1.07
Number Outstanding at December 31, 2015 | shares | 263,635
Weighted- Average Remaining Contractual Life in Years | 1 year 3 months 18 days
Weighted- Average Exercise Price, option outstanding | $ 1.07
Number Exercisable at December 31, 2015 | shares | 263,635
Weighted- Average Exercise Price, option exercisable | $ 1.07
Aggregate Intrinsic Value at December 31, 2015 | $ | $ 3,852
Range Three [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Lower range limit | $ 2.09
Upper range limit | $ 2.26
Number Outstanding at December 31, 2015 | shares | 396,426
Weighted- Average Remaining Contractual Life in Years | 3 years 4 months 24 days
Weighted- Average Exercise Price, option outstanding | $ 2.20
Number Exercisable at December 31, 2015 | shares | 396,426
Weighted- Average Exercise Price, option exercisable | $ 2.20
Aggregate Intrinsic Value at December 31, 2015 | $ | $ 5,345
Range Four [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Lower range limit | $ 5.05
Upper range limit | $ 5.05
Number Outstanding at December 31, 2015 | shares | 285,000
Weighted- Average Remaining Contractual Life in Years | 5 years 1 month 6 days
Weighted- Average Exercise Price, option outstanding | $ 5.05
Number Exercisable at December 31, 2015 | shares | 210,000
Weighted- Average Exercise Price, option exercisable | $ 5.05
Aggregate Intrinsic Value at December 31, 2015 | $ | $ 2,232
Range Five [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Lower range limit | $ 6.36
Upper range limit | $ 6.82
Number Outstanding at December 31, 2015 | shares | 74,536
Weighted- Average Remaining Contractual Life in Years | 5 years 4 months 24 days
Weighted- Average Exercise Price, option outstanding | $ 6.46
Number Exercisable at December 31, 2015 | shares | 74,536
Weighted- Average Exercise Price, option exercisable | $ 6.46
Aggregate Intrinsic Value at December 31, 2015 | $ | $ 687
Range Six [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Lower range limit | $ 7.01
Upper range limit | $ 8.51
Number Outstanding at December 31, 2015 | shares | 90,000
Weighted- Average Remaining Contractual Life in Years | 5 years 8 months 12 days
Weighted- Average Exercise Price, option outstanding | $ 7.48
Number Exercisable at December 31, 2015 | shares | 90,000
Weighted- Average Exercise Price, option exercisable | $ 7.48
Aggregate Intrinsic Value at December 31, 2015 | $ | $ 738

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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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