Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator:
Net loss	$ (7,177)	$ (1,466)	$ (40,898)	$ (19,920)
Shares used in computing net loss per share:
Weighted average basic shares outstanding - basic (in shares)	22,920,000	22,881,000	22,902,000	22,866,000
Effect of dilutive securities (in shares)	0	0	0	0
Weighted average common shares outstanding - diluted (in shares)	22,920,000	22,881,000	22,902,000	22,866,000
Loss per common share:
Loss per share of common stock – basic (in dollars per share)	$ (0.31)	$ (0.06)	$ (1.79)	$ (0.87)
Loss per share of common stock – diluted (in dollars per share)	$ (0.31)	$ (0.06)	$ (1.79)	$ (0.87)
Antidilutive shares (in shares)	100,000	200,000	200,000	200,000
SARs
Loss per common share:
Antidilutive shares (in shares)	0	0	0	0
Restricted Stock Awards
Loss per common share:
Antidilutive shares (in shares)	0	0	0	0