CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury stock [Member]	Accumulated Deficit [Member]
Beginning Balance at Dec. 31, 2020	$ 29,943	$ 6	$ 353	$ 293,400		$ (263,816)
Begining Balance (in shares) at Dec. 31, 2020		568	35,281,183
Issuance of common stock from stock option awards	(120)		$ 4	(124)
Issuance of common stock from stock options awards, shares			366,294
Stock-based compensation expense	67			67
Net income	1,032					1,032
Ending Balance at Mar. 31, 2021	30,922	$ 6	$ 357	293,343		(262,784)
Ending Balance (in shares) at Mar. 31, 2021		568	35,647,477
Beginning Balance at Dec. 31, 2020	29,943	$ 6	$ 353	293,400		(263,816)
Begining Balance (in shares) at Dec. 31, 2020		568	35,281,183
Net income	1,619
Ending Balance at Jun. 30, 2021	30,983	$ 6	$ 363	292,811		(262,197)
Ending Balance (in shares) at Jun. 30, 2021		568	36,284,382
Beginning Balance at Mar. 31, 2021	30,922	$ 6	$ 357	293,343		(262,784)
Begining Balance (in shares) at Mar. 31, 2021		568	35,647,477
Issuance of common stock from stock option awards	(670)		$ 6	(676)
Issuance of common stock from stock options awards, shares			611,905
Issuance of restricted common stock	76			76
Issuance of restricted common stock, shares			25,000
Stock-based compensation expense	68			68
Net income	587					587
Ending Balance at Jun. 30, 2021	30,983	$ 6	$ 363	292,811		(262,197)
Ending Balance (in shares) at Jun. 30, 2021		568	36,284,382
Beginning Balance at Dec. 31, 2021	32,639	$ 6	$ 366	293,030		(260,763)
Begining Balance (in shares) at Dec. 31, 2021		565	36,574,702		0
Issuance of common stock from stock option awards	(23)		$ 1	(24)
Issuance of common stock from stock options awards, shares			103,135
Stock-based compensation expense	106			106
Net income	645					645
Ending Balance at Mar. 31, 2022	33,367	$ 6	$ 367	293,112		(260,118)
Ending Balance (in shares) at Mar. 31, 2022		565	36,677,837		0
Beginning Balance at Dec. 31, 2021	$ 32,639	$ 6	$ 366	293,030		(260,763)
Begining Balance (in shares) at Dec. 31, 2021		565	36,574,702		0
Issuance of common stock from stock options awards, shares	235,375
Net income	$ 3,223
Ending Balance at Jun. 30, 2022	35,973	$ 6	$ 367	293,245	$ (105)	(257,540)
Ending Balance (in shares) at Jun. 30, 2022		565	36,734,087		71,512
Beginning Balance at Mar. 31, 2022	33,367	$ 6	$ 367	293,112		(260,118)
Begining Balance (in shares) at Mar. 31, 2022		565	36,677,837		0
Issuance of common stock from stock option awards	25			25
Issuance of common stock from stock options awards, shares			56,250
Stock-based compensation expense	108			108
Repurchase of common stock, shares					71,512
Repurchase of common stock	(105)				$ (105)
Net income	2,578					2,578
Ending Balance at Jun. 30, 2022	$ 35,973	$ 6	$ 367	$ 293,245	$ (105)	$ (257,540)
Ending Balance (in shares) at Jun. 30, 2022		565	36,734,087		71,512