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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2013
Accounting Policies [Abstract] |
Summary of Earnings (Loss) per Basic and Diluted Weighted Average Common Shares Outstanding | Earnings (loss) per basic and diluted weighted average common shares outstanding was calculated as follows for the years ended December 31 (in thousands, except per share data):
|  | 2013 |  |  | 2012 |  |  | 2011 |
Net income (loss) (in thousands) |  | $ | (923 | ) |  | $ | 16,244 |  |  | $ | 12,660 |
Basic weighted-average common shares outstanding |  |  | 9,445 |  |  |  | 9,377 |  |  |  | 9,333 |
Effect of potentially dilutive common shares (1) |  |  | — |  |  |  | 68 |  |  |  | 51 |
Diluted weighted-average common shares outstanding |  |  | 9,445 |  |  |  | 9,445 |  |  |  | 9,384 |
Earnings (loss) per common share: |  |  |  |  |  |  |  |  |  |  |  |
Earnings (loss) per basic common share |  | $ | (0.10 | ) |  | $ | 1.73 |  |  | $ | 1.36 |
Earnings (loss) per diluted common share |  |  | (0.10 | ) |  |  | 1.72 |  |  |  | 1.35 |
Antidilutive shares excluded from net earnings per diluted common share calculation |  |  | 93 |  |  |  | 92 |  |  |  | 58 |
(1) | Represents the effect of the assumed exercise of stock options and the vesting of restricted stock units and performance stock awards, based on the treasury stock method.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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