CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2021	$ 41,522	$ 216	$ 97,778	$ (56,472)
Balance (in shares) at Dec. 31, 2021		21,614,000
Issuance of unrestricted stock (in shares)		28,000
Stock-based compensation expense	430		430
Net income (loss)	(1,278)			(1,278)
Balance at Mar. 31, 2022	40,674	$ 216	98,208	(57,750)
Balance (in shares) at Mar. 31, 2022		21,642,000
Balance at Dec. 31, 2021	41,522	$ 216	97,778	(56,472)
Balance (in shares) at Dec. 31, 2021		21,614,000
Net income (loss)	31
Balance at Sep. 30, 2022	42,648	$ 217	99,041	(56,440)	$ (170)
Balance (in shares) at Sep. 30, 2022		21,687,000
Balance at Mar. 31, 2022	40,674	$ 216	98,208	(57,750)
Balance (in shares) at Mar. 31, 2022		21,642,000
Issuance of common stock under employee stock purchase plan	93	$ 1	92
Issuance of common stock under employee stock purchase plan (in shares)		40,000
Stock-based compensation expense	378		378
Repurchase of common stock	(3)		(3)
Repurchase of common stock (in shares)		(1,000)
Net income (loss)	(1,289)			(1,289)
Balance at Jun. 30, 2022	39,853	$ 217	98,675	(59,039)
Balance (in shares) at Jun. 30, 2022		21,681,000
Issuance of common stock under employee stock purchase plan	3	$ 1	2
Issuance of common stock under employee stock purchase plan (in shares)		91,000
Shares surrendered by employees to pay taxes related to unrestricted stock	(24)		(24)
Shares surrendered by employees to pay taxes related to unrestricted stock (in shares)		(10,000)
Stock-based compensation expense	548		548
Repurchase of common stock	(161)	$ (1)	(160)
Repurchase of common stock (in shares)		(75,000)
Other comprehensive income (loss)	(170)		0		(170)
Net income (loss)	2,599			2,599
Balance at Sep. 30, 2022	42,648	$ 217	99,041	(56,440)	(170)
Balance (in shares) at Sep. 30, 2022		21,687,000
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
Issuance of unrestricted stock		$ 1	(1)
Issuance of unrestricted stock (in shares)		62,000
Shares surrendered by employees to pay taxes related to unrestricted stock	$ (15)		(15)
Shares surrendered by employees to pay taxes related to unrestricted stock (in shares)		(9,000)
Stock-based compensation expense	335		335
Repurchase of common stock	(341)	$ (2)	(339)
Repurchase of common stock (in shares)		(191,000)
Other comprehensive income (loss)	147				147
Net income (loss)	(1,568)			(1,568)
Balance at Mar. 31, 2023	38,767	$ 210	98,286	(59,766)	37
Balance (in shares) at Mar. 31, 2023		20,955,000
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
Net income (loss)	$ (3,075)
Balance at Sep. 30, 2023	$ 37,865	$ 210	98,976	(61,273)	(48)
Balance (in shares) at Sep. 30, 2023	21,014,256	21,014,000
Balance at Mar. 31, 2023	$ 38,767	$ 210	98,286	(59,766)	37
Balance (in shares) at Mar. 31, 2023		20,955,000
Issuance of common stock under employee stock purchase plan	52	$ 1	51
Issuance of common stock under employee stock purchase plan (in shares)		38,000
Stock-based compensation expense	403		403
Other comprehensive income (loss)	(128)				(128)
Net income (loss)	(2,651)			(2,651)
Balance at Jun. 30, 2023	36,443	$ 211	98,740	(62,417)	(91)
Balance (in shares) at Jun. 30, 2023		20,993,000
Issuance of unrestricted stock	2		2
Issuance of unrestricted stock (in shares)		102,000
Stock-based compensation expense	359		359
Repurchase of common stock	(126)	$ (1)	(125)
Repurchase of common stock (in shares)		(81,000)
Other comprehensive income (loss)	43				43
Net income (loss)	1,144			1,144
Balance at Sep. 30, 2023	$ 37,865	$ 210	$ 98,976	$ (61,273)	$ (48)
Balance (in shares) at Sep. 30, 2023	21,014,256	21,014,000