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Activity Under Equity Incentive Plans Related to Restricted Stock Units (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Number of RSUs |  |  |
Granted | $ 2.03 | $ 2.13 | $ 1.37
Restricted Stock Units Rsus |  |  |
Number of RSUs |  |  |
Beginning Balance | 16,645 | 33,295 | 88,400
Granted |  | 2,000 |
Forfeited |  |  | (17,727)
Vested | (16,645) | (18,650) | (37,378)
Ending Balance |  | 16,645 | 33,295
Restricted Stock |  |  |
Number of RSUs |  |  |
Beginning Balance | $ 1.85 | $ 1.85 | $ 2.54
Granted | $ 0.00 | $ 3.03 | $ 0.00
Forfeited | $ 0.00 | $ 0.00 | $ 1.85
Vested | $ 1.85 | $ 1.98 | $ 3.48
Ending Balance |  | $ 1.85 | $ 1.85

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- Definition Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other than Options Outstanding, Number + References No definition available. + Details
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- Definition Share Based Compensation Arrangement By Share Based Payment Award Options Forfeited In Period Weighted Average Grant Date Fair Value + References No definition available. + Details
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- Definition Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Values + References No definition available. + Details
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- Definition Share Based Compensation Arrangement By Share Based Payment Award Options Vested In Period Weighted Average Grant Date Fair Value + References No definition available. + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + 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)(iv)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + 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)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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