Basis of Presentation and Summary of Significant Accounting Policies - Reconciliation of Basic and Diluted Loss per Share (Details) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accounting Policies [Abstract]
Securities excluded from net loss per share calculation (in shares)		47	28	4	66
Numerator:
Net loss		$ (4,340)	$ (2,254)	$ (4,881)	$ (5,119)
Net loss per share - basic and diluted
Basic weighted average common shares outstanding (in shares)	[1]	3,192	2,467	3,139	2,446

[1] * Shares outstanding for prior periods have been restated for the 1-for-5 reverse stock split