CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Allowance for doubtful accounts	$ 539	$ 601
Stockholders' deficit:
Commons stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	46,935,000	46,551,000
Common stock, shares outstanding	44,009,000	43,771,000