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Common Stock and Stock-Based Compensation Plans - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 9 Months Ended
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Sep. 30, 2013
Stockholders Equity Note [Line Items] |
Options granted under stock incentive plans vesting rate, year one | 25.00%
Unrecognized compensation expense | $ 7,104
Unrecognized compensation expense, weighted-average period of recognition | 1 year 4 months 24 days
Maximum |
Stockholders Equity Note [Line Items] |
Shares vesting period | 4 years
Stock appreciation rights (SARs) |
Stockholders Equity Note [Line Items] |
Options granted percentage | 400.00%

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- Definition Share Based Compensation Arrangement By Share Based Payment Award Options Vesting Percentage Year One + References No definition available. + Details
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- Definition Share Based Compensation Arrangement By Share Based Payment Award Percentage Of Awards Granted + References No definition available. + Details
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- Details
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- Definition Unrecognized cost of unvested share-based compensation awards. + 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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