Summary of Significant Accounting Policies (Net Loss Per Share) (Tables)

12 Months Ended

Dec. 31, 2018

Contract with Customer, Asset, Net, Current, Percent Change

Net Income (Loss) Per Share (Tables)

The components of basic and diluted net loss per share were as follows (in thousands, except loss per share data):

		Year Ended December 31,
Numerator:		2018		2017
Net loss available for common shareholders	$	(27,250)	$	(25,486)
Denominator:
Weighted-average common shares outstanding		86,983		72,786
Net loss per share - basic and diluted	$	(0.31)	$	(0.35)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The shares shown represent the number of shares of common stock which would be issued upon conversion in the respective years shown below (in thousands):

	Year Ended December 31,
	2018	2017
Options outstanding and warrants exercisable	6,619	7,007
Nonvested restricted stock units	1,149	185
	7,768	7,192