Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data (Unaudited)

12. QUARTERLY FINANCIAL DATA (Unaudited)

Quarterly Financial Data (Unaudited)

Summary quarterly results for the two years ended December 31, 2016 are as follows (in thousands, other than share and per share data):

	Three months ended												Full year
2016	March 31			June 30			September 30			December 31
Revenue	$	4,287		$	3,535		$	7,086		$	4,722		$	19,630
Gross loss	$	(5,419	)	$	(4,051	)	$	(11,646	)	$	(4,891	)	$	(26,008	)
Loss from operations	$	(8,156	)	$	(8,150	)	$	(24,769	)	$	(21,642	)	$	(62,717	)
Loss before income taxes	$	(7,484	)	$	(8,383	)	$	(25,017	)	$	(22,218	)	$	(63,102	)
Net loss	$	(7,333	)	$	(8,209	)	$	(24,801	)	$	(22,536	)	$	(62,879	)
Basic and diluted loss per common share	$	(0.28	)	$	(0.31	)	$	(0.94	)	$	(0.85	)	$	(2.39	)
Weighted average common shares outstanding used in computing net loss per common share, basic and diluted:		26,226,614			26,296,398			26,374,516			26,527,909			26,356,359
	Three months ended												Full year
2015	March 31			June 30			September 30			December 31
Revenue	$	8,910		$	7,106		$	5,346		$	2,456		$	23,818
Gross loss	$	(5,109	)	$	(5,155	)	$	(3,891	)	$	(8,988	)	$	(23,143	)
Loss from operations	$	(7,948	)	$	(8,322	)	$	(47,370	)	$	(12,309	)	$	(75,949	)
Loss before income taxes	$	(8,312	)	$	(8,529	)	$	(48,859	)	$	(12,156	)	$	(77,856	)
Net loss	$	(8,348	)	$	(8,580	)	$	(48,196	)	$	(12,706	)	$	(77,830	)
Basic and diluted loss per common share	$	(0.32	)	$	(0.33	)	$	(1.84	)	$	(0.49	)	$	(2.98	)
Weighted average common shares outstanding used in computing net loss per common share, basic and diluted:		26,129,276			26,142,261			26,160,308			26,192,838			26,156,170