Income Taxes - Total Income Tax (Benefit) Expense (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current taxes:
Federal taxes									$ (144)	$ (8,790)	$ (17,711)
State taxes									23	93	140
Foreign taxes									219	330	0
Current taxes									98	(8,367)	(17,571)
Deferred taxes:
Federal taxes									(88)	(1,319)	0
State taxes									238	(3,181)	0
Foreign taxes									(19)	(64)	0
Deferred taxes									131	(4,564)	0
Income tax (benefit) expense	$ 4	$ 47	$ 1	$ 177	$ (10,556)	$ (1,870)	$ (599)	$ 94	$ 229	$ (12,931)	$ (17,571)