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Stock-Based Compensation (Detail) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Unrecognized compensation cost | $ 3,243 |  | $ 3,243 |
Share-based compensation expense | 469 | 542 | 1,694 | 1,207
Stock Options [Member] |  |  |  |
Award vesting period |  |  | 10 years |
Award service period (in years) |  |  | 4 years |
Non-Vested Stock Options [Member] |  |  |  |
Unrecognized compensation cost | 0 |  | 0 |
Restricted Stock Units (RSUs) [Member] |  |  |  |
Unrecognized compensation cost | $ 3,243 |  | $ 3,243 |
Award vesting period |  |  | 3 years |
Unrecognized compensation cost, period of recognition |  |  | 1 year 11 months 12 days |
2014 Plan [Member] |  |  |  |
Number of shares originally reserved | 2,000,000 |  | 2,000,000 |
Number of shares available for grant | 1,437,150 |  | 1,437,150 |
Second Anniversary of Award Date [Member] | Stock Options [Member] |  |  |  |
Percent of options vesting | 50.00% |  | 50.00% |
Second Anniversary of Award Date [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |
Peer company review period (in years) |  |  | 2 years |
Percentage of restricted stock units vesting |  |  | 67.00% |
Second Anniversary of Award Date [Member] | Restricted Stock Units TSR [Member] |  |  |  |
Peer company review period (in years) |  |  | 2 years |
Percentage of restricted stock units vesting |  |  | 67.00% |
Third Anniversary of Award Date [Member] | Stock Options [Member] |  |  |  |
Percent of options vesting | 25.00% |  | 25.00% |
Third Anniversary of Award Date [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |
Percentage of restricted stock units vesting |  |  | 33.00% |
Third Anniversary of Award Date [Member] | Restricted Stock Units TSR [Member] |  |  |  |
Percentage of restricted stock units vesting |  |  | 33.00% |
Fourth Anniversary of Award Date [Member] | Stock Options [Member] |  |  |  |
Percent of options vesting | 25.00% |  | 25.00% |

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- Definition Percentage of restricted stock units vesting. + References No definition available. + Details
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- Definition Stock options granted to employees under the Incentive Plan have a 10-year life and they vest as follows: 50% after the second anniversary of the award date, 25% after the third anniversary, and the final 25% after the fourth anniversary of the award date. + References No definition available. + Details
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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Peer Company Review Period + References No definition available. + Details
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- Definition Stock-based Compensation Arrangement by Share-based Payment Award, Award Service Period + References No definition available. + Details
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + 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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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + 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)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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