CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Revenues	$ 50,173	$ 20,241	$ 128,415	$ 73,993
Cost of sales	64,696	41,106	175,829	138,512
Gross loss	(14,523)	(20,865)	(47,414)	(64,519)
Selling, general and administrative expenses	10,135	9,640	31,196	31,148
Loss (gain) on disposal or impairment of assets	125,738	(15)	125,738	910
Loss on sale of Russian proppant business	26,728	0	26,728	0
Operating loss	(177,124)	(30,490)	(231,076)	(96,577)
Other expense:
Interest expense, net	(1,915)	(1,440)	(5,630)	(3,859)
Other, net	258	50	448	133
Nonoperating income (expense), total	(1,657)	(1,390)	(5,182)	(3,726)
Loss before income taxes	(178,781)	(31,880)	(236,258)	(100,303)
Income tax benefit	(316)	(11,930)	(527)	(35,373)
Net loss	$ (178,465)	$ (19,950)	$ (235,731)	$ (64,930)
Loss per share:
Basic	$ (6.69)	$ (0.81)	$ (8.84)	$ (2.75)
Diluted	(6.69)	(0.81)	(8.84)	(2.75)
Other information:
Dividends declared per common share	$ 0	$ 0	$ 0	$ 0