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Stock-Based Compensation - Summary of Stock Based Compensation Activity (Detail) (USD $)
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12 Months Ended | |
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Dec. 31, 2013
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Dec. 31, 2012
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| Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] | ||
| Stock based compensation, Shares Outstanding, beginning balance | 7,900 | 9,317 |
| Stock based compensation, Shares, Granted | ||
| Stock based compensation, Shares, Vested | ||
| Stock based compensation, Shares, Forfeited/Expired | (2,833) | (1,417) |
| Stock based compensation, Shares Outstanding, ending balance | 5,067 | 7,900 |
| Stock based compensation, Weighted Average Fair Value Per Share, beginning balance | $ 23.13 | $ 23.13 |
| Stock based compensation, Weighted Average Fair Value Per Share, Granted | ||
| Stock based compensation, Weighted Average Fair Value Per Share, Vested | ||
| Stock based compensation, Weighted Average Fair Value Per Share, Forfeited/Expired | $ 23.13 | $ 23.13 |
| Stock based compensation, Weighted Average Fair Value Per Share, ending balance | $ 23.13 | $ 23.13 |