CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Allowance for expected credit losses	$ 668	$ 768
Fixed assets, accumulated depreciation	18,947	18,646
Intangible assets, accumulated amortization	$ 1,556	$ 1,518
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)	14,039,749	14,003,653
Common stock, shares outstanding (in shares)	9,994,907	9,958,811
Treasury stock (in shares)	4,044,842	4,044,842