CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets:
Fixed assets, accumulated depreciation	$ 21,007	$ 20,518
Intangible assets, accumulated amortization	$ 3,677	$ 3,487
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)	11,515,090	11,463,141
Common stock, shares outstanding (in shares)	7,470,248	7,418,299
Treasury stock (in shares)	4,044,842	4,044,842