Interim Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

Schedule of interim financial data (unaudited)

	2018
	Q1			Q2			Q3			Q4			Total
Revenue	$	1,436		$	1,244		$	1,587		$	1,678		$	5,945
Loss from operations	(18,405		)	(22,046		)	(32,426		)	(16,903		)	(89,780		)
Net loss	$	(17,429	)	$	3,091		$	(24,473	)	$	(18,249	)	$	(57,060	)
Net loss attributable to common shares	(19,765		)	550			(27,040		)	(20,896		)	(67,151		)
Basic net income/(loss) per common share	$	(0.36	)	$	0.01		$	(0.49	)	$	(0.38	)	$	(1.21	)
Diluted net income/(loss) per common share	$	(0.36	)	$	0.01		$	(0.49	)	$	(0.38	)	$	(1.21	)

	2017
	Q1			Q2			Q3			Q4			Total
Revenue	$	235		$	1,039		$	6,892		$	2,534		$	10,700
Loss from operations	(18,299		)	(19,485		)	(12,897		)	(60,249		)	(110,930		)
Net loss	$	(18,627	)	$	(18,255	)	$	(11,600	)	$	(35,931	)	$	(84,413	)
Net loss attributable to common shares	$	(18,627	)	$	(18,255	)	$	(11,600	)	$	(36,842	)	$	(85,324	)
Basic and diluted net loss per common share	$	(0.34	)	$	(0.33	)	$	(0.21	)	$	(0.67	)	$	(1.56	)