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Stockholders' Equity - Additional Information 1 (Detail) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2017 | May 22, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Non-vested cash award ,Unrecognized compensation costs | $ 4.3 |  |  |  |
Weighted-average remaining contractual life of non vested cash awards | 1 year |  |  |  |
Liabilities related to cash awards, current | $ 2.5 |  |  |  |
Liabilities related to cash awards, non current | $ 4.9 |  |  |  |
Shares issued for SLO Awards | 20,587 | 71,893 | 101,062 |  |
Target level for the determination of performance goals and measures | 100.00% |  |  |  |
2014 Omnibus Incentive Plan [Member] |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Number of shares of common stock authorized for issuance |  |  |  |  | 4,250,000
Time - Vesting Inducement Award [Member] |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Shares issued for SLO Awards | 75,000 |  |  |  |
Restricted stock for granted, Weighted- Average per Share Fair Value on Grant Date during the year | $ 39.95 |  |  |  |
Inducement award service expiration date | Dec. 31, 2017 |  |  |  |
Performance - Vesting Inducement Award [Member] |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Shares issued for SLO Awards | 75,000 |  |  |  |
Restricted stock for granted, Weighted- Average per Share Fair Value on Grant Date during the year | $ 12.55 |  |  |  |
Target level for the determination of performance goals and measures | 100.00% |  |  |  |
Performance Period | 2 years |  |  |  |
Performance - Vesting Inducement Award [Member] | Scenario, Forecast [Member] | Tranche One [Member] |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Cumulative total stockholder return |  |  |  | 25.00% |
Performance - Vesting Inducement Award [Member] | Minimum [Member] | Scenario, Forecast [Member] | Tranche One [Member] |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Stock Price |  |  |  | $ 43.70 |
Performance - Vesting Inducement Award [Member] | Minimum [Member] | Scenario, Forecast [Member] | Tranche Two [Member] |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Stock Price |  |  |  | $ 55.00 |

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