2. Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Numerator:
Net loss	$ (32,235)	$ (6,234)	$ (55,909)	$ (15,776)
Denominator:
Weighted-average common shares, basic	52,399	37,828	45,481	37,551
Dilutive effect of stock options	$ 0	$ 0	$ 0	$ 0
Weighted-average common shares, diluted	52,399	37,828	45,481	37,551
Net loss per share, basic and diluted	$ (0.62)	$ (0.16)	$ (1.23)	$ (0.42)