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Equity-Based Compensation - Additional Information (Detail) (USD $)
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0 Months Ended |
12 Months Ended |
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Sep. 16, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
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| Stock-based compensation, Outstanding shares |
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3,160,016 |
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| Stock-based compensation, Shares authorized for grant |
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3,079,616 |
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| Stock-based compensation, Shares authorized for future grant |
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1,568,173 |
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| Conversion rate units into stock/options |
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10.25 |
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| Additional stock-based compensation expense |
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$ 800,000 |
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| Cash bonus per unit |
0.24 |
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|
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| Reduction in exercise price of option |
$ 0.24 |
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| Additional compensation expense |
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4,600,000 |
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| Additional stock-based compensation expense |
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1,500,000 |
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| Total unrecognized compensation cost |
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17,706 |
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| Weighted-average period |
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3 years 2 months 12 days |
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| Weighted average grant-date fair value of option granted |
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$ 11.88 |
$ 6.68 |
$ 3.79 |
| Options Held [Member] |
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
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|
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| Conversion rate units into stock/options |
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10.25 |
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| Restricted Stock [Member] |
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|
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
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|
|
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| Conversion rate units into stock/options |
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10.25 |
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| Performance-Based Options [Member] |
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
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| Additional stock-based compensation expense |
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$ 800,000 |
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| Unvested performance option |
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0 |
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| Vested Options [Member] |
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
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| Cash bonus per unit |
2.46 |
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| Unvested Options [Member] |
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
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| Reduction in exercise price of option |
$ 2.46 |
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| 2013 Omni Bus Long-term Incentive Plan [Member] |
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
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| Plans under which new awards not issued |
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1 |
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| Legacy Equity-Based Compensation Plans [Member] |
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
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|
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| Plans under which new awards not issued |
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2 |
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| Management Equity Incentive Plan [Member] |
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
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|
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| Plans under which new awards not issued |
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2 |
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| Directors and Consultants Equity Incentive Plan [Member] |
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
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| Plans under which new awards not issued |
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2 |
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