CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Accounts receivable, net of allowance for doubtful accounts	$ 2,699	$ 1,826
Financing receivable, allowance for credit loss, current	287	325
Financing receivable, allowance for credit loss, noncurrent	$ 592	$ 397
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	30,000,000	30,000,000
Common stock, shares issued (in shares)	14,906,000	14,734,000
Common stock, shares outstanding (in shares)	14,906,000	14,734,000
Treasury stock, shares (in shares)	140,000	89,000