Stockholders' Equity - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Numerator:
Net loss	$ (22,180)	$ (44,225)	$ (10,765)
Denominator:
Basic weighted average common shares outstanding (in shares)	19,404,477	19,028,918	19,089,402
Diluted weighted average common shares outstanding (in shares)	19,404,477	19,028,918	19,089,402
Basic net loss per common share (in usd per share)	$ (1.14)	$ (2.32)	$ (0.56)
Diluted net loss per common share (in usd per share)	$ (1.14)	$ (2.32)	$ (0.56)
Restricted stock units
Denominator:
Restricted stock units (in shares)	371,194	297,757	189,862