CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 64	$ 196
Less: acccumulated depreciation and amortization	823	807
Finite-lived intangible assets, accumulated amortization	$ 1,087	$ 532
Preferred stock, par value (dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, issued (in shares)	3,816,000	3,694,000
Common stock, shares, outstanding (in shares)	2,707,000	2,822,000
Treasury stock, shares (in shares)	994,000	987,000