CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
Balance at Dec. 31, 2020	$ 45,670	$ 214	$ 96,104	$ (50,648)
Balance (in shares) at Dec. 31, 2020		21,379,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of unrestricted stock		$ 2	(2)
Issuance of unrestricted stock (in shares)		189,000
Shares surrendered by employees to pay taxes related to unrestricted stock	(54)		(54)
Shares surrendered by employees to pay taxes related to unrestricted stock (in shares)		(16,000)
Issuance of common stock under employee stock purchase plan	163		163
Issuance of common stock under employee stock purchase plan (in shares)		62,000
Stock-based compensation expense	1,567		1,567
Net loss	(5,824)			(5,824)
Balance at Dec. 31, 2021	$ 41,522	$ 216	97,778	(56,472)
Balance (in shares) at Dec. 31, 2021	21,613,982	21,614,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of unrestricted stock	$ 2	$ 1	1
Issuance of unrestricted stock (in shares)		118,000
Shares surrendered by employees to pay taxes related to unrestricted stock	(26)		(26)
Shares surrendered by employees to pay taxes related to unrestricted stock (in shares)		(10,000)
Issuance of common stock under employee stock purchase plan	152	$ 1	151
Issuance of common stock under employee stock purchase plan (in shares)		76,000
Stock-based compensation expense	1,707		1,707
Repurchase of common stock	(1,312)	$ (7)	(1,305)
Repurchase of common stock (in shares)		(705,000)
Other comprehensive loss	(110)				$ (110)
Net loss	(1,726)			(1,726)
Balance at Dec. 31, 2022	$ 40,209	$ 211	$ 98,306	$ (58,198)	$ (110)
Balance (in shares) at Dec. 31, 2022	21,093,447	21,093,000