CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets:
Fixed assets, accumulated depreciation	$ 19,160	$ 19,010
Intangible assets, accumulated amortization	$ 3,833	$ 3,771
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)	11,583,527	11,515,090
Common stock, shares outstanding (in shares)	7,538,685	7,470,248
Treasury stock (in shares)	4,044,842	4,044,842