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 (in shares)	994,000	987,000