Summary of Significant Accounting Policies - Calculation of Basic and Diluted Income Per Common Share and Common Share Equivalents (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2014 |
Sep. 30, 2014 |
Jun. 30, 2014 |
Mar. 31, 2014 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Basic net (loss) income per common share | |||||||||||
| Net (loss) income | $ (2,069) | $ 953 | $ (326) | $ (692) | $ (494) | $ 3,744 | $ (10) | $ 152 | $ (2,134) | $ 3,390 | $ 6,704 |
| Less: Preferred stock dividends | (28) | (28) | (28) | ||||||||
| Net (loss) income applicable to common stock | $ (2,162) | $ 3,362 | $ 6,676 | ||||||||
| Basic weighted average number of common shares outstanding | 10,774 | 10,992 | 11,259 | ||||||||
| Basic net (loss) income per common share | $ (0.19) | $ 0.09 | $ (0.03) | $ (0.06) | $ (0.05) | $ 0.35 | $ 0.00 | $ 0.01 | $ (0.20) | $ 0.31 | $ 0.59 |
| Diluted net (loss) income per common share | |||||||||||
| Net (loss) income applicable to common stock | $ (2,162) | $ 3,362 | $ 6,676 | ||||||||
| Add: Preferred stock dividends | 28 | 28 | 28 | ||||||||
| Less: Fair value of stock warrants for dilutive warrants | (379) | (794) | |||||||||
| Net (loss) income applicable to dilutive common stock | $ (2,162) | $ 3,011 | $ 5,910 | ||||||||
| Basic weighted average number of common shares outstanding | 10,774 | 10,992 | 11,259 | ||||||||
| Effect of dilutive securities | |||||||||||
| Dilutive stock awards | 15 | 14 | |||||||||
| Weighted average number of diluted shares outstanding adjustment | 15 | 14 | |||||||||
| Diluted weighted average number of common shares outstanding | 10,774 | 11,007 | 11,273 | ||||||||
| Diluted net (loss) income per common share | $ (0.19) | $ 0.09 | $ (0.03) | $ (0.06) | $ (0.05) | $ 0.35 | $ (0.01) | $ (0.01) | $ (0.20) | $ 0.27 | $ 0.52 |