CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Assets:
Fixed assets, accumulated depreciation	$ 16,898	$ 16,736
Intangible assets, accumulated amortization	$ 1,248	$ 1,209
Shareholders' equity:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares issued (in shares)	13,954,850	13,917,731
Common stock, shares outstanding (in shares)	9,910,008	9,872,889
Treasury stock (in shares)	4,044,842	4,044,842