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
Issuance of unrestricted stock		$ 1	(1)
Issuance of unrestricted stock (in shares)		131,000
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)
Stock-based compensation expense	197		197
Net income (loss)	(1,448)			(1,448)
Balance at Mar. 31, 2021	44,365	$ 215	96,246	(52,096)
Balance (in shares) at Mar. 31, 2021		21,494,000
Balance at Dec. 31, 2020	45,670	$ 214	96,104	(50,648)
Balance (in shares) at Dec. 31, 2020		21,379,000
Net income (loss)	(4,569)
Balance at Sep. 30, 2021	42,149	$ 215	97,151	(55,217)
Balance (in shares) at Sep. 30, 2021		21,549,000
Balance at Mar. 31, 2021	44,365	$ 215	96,246	(52,096)
Balance (in shares) at Mar. 31, 2021		21,494,000
Issuance of common stock under employee stock purchase plan	25		25
Issuance of common stock under employee stock purchase plan (in shares)		7,000
Stock-based compensation expense	439		439
Net income (loss)	(1,542)			(1,542)
Balance at Jun. 30, 2021	43,287	$ 215	96,710	(53,638)
Balance (in shares) at Jun. 30, 2021		21,501,000
Issuance of common stock under employee stock purchase plan (in shares)		48,000
Stock-based compensation expense	441		441
Net income (loss)	(1,579)			(1,579)
Balance at Sep. 30, 2021	42,149	$ 215	97,151	(55,217)
Balance (in shares) at Sep. 30, 2021		21,549,000
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
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	21,613,982	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	21,686,528	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 unrestricted stock	3	$ 1	2
Issuance of unrestricted stock (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 loss	(170)				(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	21,686,528	21,687,000