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Earnings per Share Basis and Diluted (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Numerator
Net income	$ (8,455)	$ 1,734
Denominator
Weighted average shares (basic)	28,667,782	27,757,397
Dilutive effect of potential common shares	0	1,607,945
Weighted average shares (diluted)	28,667,782	29,365,342
Basic earnings per share	$ (0.29)	$ 0.06
Diluted earnings per share	$ (0.29)	$ 0.06

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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