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 [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, 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	36,500		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