Earnings per Share Basis and Diluted (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Numerator
Net income	$ (6,996)	$ 580	$ (15,451)	$ 2,314
Denominator
Weighted average shares (basic)	28,958,233	28,006,517	28,813,008	27,881,957
Dilutive effect of potential common shares	0	1,952,063	0	1,828,245
Weighted average shares (diluted)	28,958,233	29,958,580	28,813,008	29,710,202
Basic earnings per share	$ (0.24)	$ 0.02	$ (0.54)	$ 0.08
Diluted earnings per share	$ (0.24)	$ 0.02	$ (0.54)	$ 0.08