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Net (Loss) Earnings Per Share - Reconciliation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net Income (Loss) Available to Common Stockholders, Basic [Abstract]
Net (loss) income	$ (8,210)	$ (1,136)	$ (4,169)	$ 2,186
Less: Income from discontinued operations, net of income tax		(1)		(5,725)
Less: Deemed dividends on convertible preferred stock				(423)
Net loss attributable to common stockholders - basic	$ (8,210)	(1,137)	$ (4,169)	(3,962)
Net income (loss) attributable to common stockholders - diluted		$ (1,137)		$ (3,962)
Earnings Per Share, Basic and Diluted [Abstract]
Weighted-average shares used in computing basic and diluted net earnings (loss) per share attributable to common stockholders (in shares)	7,472,469	5,627,656	5,947,821	5,669,913
Basic and diluted net loss per share attributable to common stockholders (in dollars per share)	$ (1.10)	$ (0.20)	$ (0.70)	$ (0.70)

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