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Schedule of Significant Option Groups Outstanding (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Options Outstanding, Shares | 2,706
Options Exercisable, Shares | 1,814
Options Outstanding, Weighted-Average Exercise Price | $ 6.29
Options Exercisable, Weighted-Average Exercise Price | $ 4.55
$0.94 - $2.58 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Options Outstanding, Weighted-Average Remaining Contractual Life (Years) | 5 years 11 months 19 days
Options Outstanding, Shares | 485
Options Exercisable, Shares | 436
Range Of Exercise Prices, Lower Limit | $ 0.94
Range Of Exercise Prices, Upper Limit | $ 2.58
Options Outstanding, Weighted-Average Exercise Price | $ 1.83
Options Exercisable, Weighted-Average Exercise Price | $ 1.79
$2.67 - $2.74 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Options Outstanding, Weighted-Average Remaining Contractual Life (Years) | 5 years 4 months 21 days
Options Outstanding, Shares | 821
Options Exercisable, Shares | 545
Range Of Exercise Prices, Lower Limit | $ 2.67
Range Of Exercise Prices, Upper Limit | $ 2.74
Options Outstanding, Weighted-Average Exercise Price | $ 2.69
Options Exercisable, Weighted-Average Exercise Price | $ 2.70
$3.23 - $7.71 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Options Outstanding, Weighted-Average Remaining Contractual Life (Years) | 3 years 9 months 18 days
Options Outstanding, Shares | 674
Options Exercisable, Shares | 590
Range Of Exercise Prices, Lower Limit | $ 3.23
Range Of Exercise Prices, Upper Limit | $ 7.71
Options Outstanding, Weighted-Average Exercise Price | $ 5.15
Options Exercisable, Weighted-Average Exercise Price | $ 5.00
$9.34 - $16.95 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Options Outstanding, Weighted-Average Remaining Contractual Life (Years) | 4 years 7 months 21 days
Options Outstanding, Shares | 726
Options Exercisable, Shares | 243
Range Of Exercise Prices, Lower Limit | $ 9.34
Range Of Exercise Prices, Upper Limit | $ 16.95
Options Outstanding, Weighted-Average Exercise Price | $ 14.39
Options Exercisable, Weighted-Average Exercise Price | $ 12.58

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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + 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)(iii) -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 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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- Definition Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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)(1) -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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