2. Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Numerator:
Net loss	$ (10,740)	$ (11,691)	$ (66,649)	$ (27,467)
Denominator:
Weighted-average common shares, basic	60,974	38,121	50,702	37,743
Dilutive effect of stock options	$ 0	$ 0	$ 0	$ 0
Weighted-average common shares, diluted	60,974	38,121	50,702	37,743
Net loss per share, basic and diluted	$ (0.18)	$ (0.31)	$ (1.31)	$ (0.73)