Earnings Per Share - Components of Diluted Earnings (Loss) per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator
Net loss	$ (3,757)	$ (840)
Amortization of preferred stock issuance costs	42	51
Net loss attributable to common stockholders	$ (3,799)	$ (891)
Denominator
Weighted average common stock outstanding – basic (shares)	1,615,710	1,582,016
Weighted average common stock outstanding – diluted (shares)	1,615,710	1,582,016
Loss per basic common share (usd per share)	$ (2.35)	$ (0.56)
Loss per diluted common share (usd per share)	$ (2.35)	$ (0.56)