Quarterly Operating Results--(Unaudited) (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Quarterly Operating Results

Quarterly results for the years ended December 31, 2017 and 2016 were as follows:

	Three Months Ended
	March 31			June 30			September 30			December 31
2017
Revenues	$	34,670		$	43,572		$	50,173		$	60,341
Gross loss		(19,458	)		(13,433	)		(14,523	)		(5,911	)
Net loss		(32,444	)		(24,822	)		(178,465	)		(17,384	)
Loss per share:
Basic	$	(1.22	)	$	(0.93	)	$	(6.69	)	$	(0.65	)
Diluted	$	(1.22	)	$	(0.93	)	$	(6.69	)	$	(0.65	)
2016
Revenues	$	33,102		$	20,651		$	20,241		$	29,058
Gross loss		(23,641	)		(20,012	)		(20,865	)		(20,495	)
Net loss		(24,684	)		(20,296	)		(19,950	)		(15,197	)
Earnings per share:
Basic	$	(1.07	)	$	(0.88	)	$	(0.81	)	$	(0.57	)
Diluted	$	(1.07	)	$	(0.88	)	$	(0.81	)	$	(0.57	)