Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts	$ 2,125	$ 2,100
Common stock, par value
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	24,260,000	24,128,000
Common stock, shares outstanding	24,260,000	24,128,000