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Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net income (loss)	$ (647)	$ 390
Less: income allocated to preferred stockholders	0	0
Net income (loss) allocated to common stockholders	$ (647)	$ 390
Weighted average shares for basic EPS (in shares)	28,945	27,484
Add: incremental shares from assumed conversions of stock options (in shares)	0	360
Weighted average shares for diluted EPS (in shares)	28,945	27,844
Basic and diluted earnings (loss) per share attributable to common stockholders (in dollars per share)	$ (0.02)	$ 0.01

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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