CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Treasury Stock, Common [Member]
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
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
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
Net income	5,523
Ending Balance at Sep. 30, 2022	38,272	$ 6	$ 369	293,433	(255,240)	$ (296)
Ending Balance (in shares) at Sep. 30, 2022		565	36,932,177			183,699
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
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, Value	(105)					$ (105)
Net income	2,578				2,578
Ending Balance at Jun. 30, 2022	35,973	$ 6	$ 367	293,245	(257,540)	$ (105)
Ending Balance (in shares) at Jun. 30, 2022		565	36,734,087			71,512
Issuance of common stock from stock option awards	20		$ 1	19
Issuance of common stock from stock options awards, shares			83,090
Issuance of restricted common stock			$ 1	(1)
Restricted stock units issued, shares			115,000
Stock-based compensation expense	170			170
Repurchase of common stock, Shares						112,187
Repurchase of common stock, Value	(191)					$ (191)
Net income	2,300				2,300
Ending Balance at Sep. 30, 2022	38,272	$ 6	$ 369	293,433	(255,240)	$ (296)
Ending Balance (in shares) at Sep. 30, 2022		565	36,932,177			183,699
Beginning Balance at Dec. 31, 2022	48,299	$ 6	$ 369	293,589	(245,270)	$ (395)
Cumulative change in accounting principle (Note 2)	(231)				(231)
Begining Balance (in shares) at Dec. 31, 2022		565	36,932,177			243,468
Balance as of January 1, 2023 (as adjusted for change in accounting principle)	(48,068)	$ (6)	$ (369)	(293,589)	245,501	$ 395
Balance as of January 1, 2023 (as adjusted for change in accounting principle), shares		565	36,932,177			243,468
Issuance of common stock from stock option awards	5			5
Issuance of common stock from stock options awards, shares			31,191
Issuance of restricted common stock	152		$ 2	150
Restricted stock units issued, shares			134,592
Stock-based compensation expense	179			179
Net income	2,829				2,829
Ending Balance at Mar. 31, 2023	51,233	$ 6	$ 371	293,923	(242,672)	$ (395)
Ending Balance (in shares) at Mar. 31, 2023		565	37,097,960			243,468
Beginning Balance at Dec. 31, 2022	$ 48,299	$ 6	$ 369	293,589	(245,270)	$ (395)
Begining Balance (in shares) at Dec. 31, 2022		565	36,932,177			243,468
Issuance of common stock from stock options awards, shares	88,375
Net income	$ 7,585
Ending Balance at Sep. 30, 2023	56,398	$ 6	$ 372	294,331	(237,916)	$ (395)
Ending Balance (in shares) at Sep. 30, 2023		563	37,151,924			243,468
Beginning Balance at Mar. 31, 2023	51,233	$ 6	$ 371	293,923	(242,672)	$ (395)
Begining Balance (in shares) at Mar. 31, 2023		565	37,097,960			243,468
Issuance of common stock from stock option awards	5			5
Issuance of common stock from stock options awards, shares			32,111
Issuance of common stock due to conversion of Series N Preferred stock, shares		(2)	80
Restricted stock units issued, shares			15,000
Stock-based compensation expense	228			228
Net income	2,779				2,779
Ending Balance at Jun. 30, 2023	54,245	$ 6	$ 371	294,156	(239,893)	$ (395)
Ending Balance (in shares) at Jun. 30, 2023		563	37,145,151			243,468
Issuance of common stock from stock option awards	1		$ 1
Issuance of common stock from stock options awards, shares			6,773
Stock-based compensation expense	175			175
Net income	1,977				1,977
Ending Balance at Sep. 30, 2023	$ 56,398	$ 6	$ 372	$ 294,331	$ (237,916)	$ (395)
Ending Balance (in shares) at Sep. 30, 2023		563	37,151,924			243,468