Basic and Diluted Loss per Share (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Numerator [Abstract]
Net (loss) income attributed to common stockholders	$ (2,205)	$ (6,258)
Denominator [Abstract]
Weighted-average shares outstanding for basic earnings per share (in shares)	20,628,669	20,342,933
Effect of dilutive securities [Abstract]
Employee stock options and warrants (in shares)	0	0
Adjusted weighted-average shares outstanding and assumed conversions for diluted earnings per share (in shares)	20,628,669	20,342,933
Shares related to dilutive securities excluded because inclusion would be anti-dilutive (in shares)	43,937	59,421