CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit
Balance, shares at Dec. 31, 2021		1,782,000
Balance, amount at Dec. 31, 2021	$ 3,193,000	$ 18,000	$ 16,296,000	$ (13,121,000)
Issuance of common stock, net, shares		6,000
Issuance of common stock, net, amount	39,000	$ 0	39,000	0
Issuance of common stock upon vesting of restricted stock units, shares		9,000
Issuance of common stock upon vesting of restricted stock units, amount	0	$ 0	0	0
Value of stock-based compensation	123,000	0	123,000	0
Net income	10,046,000	$ 0	0	10,046,000
Balance, shares at Dec. 31, 2022		1,797,000
Balance, amount at Dec. 31, 2022	13,401,000	$ 18,000	16,458,000	(3,075,000)
Issuance of common stock, net, shares		24,000
Issuance of common stock, net, amount	155,000	$ 0	155,000	0
Issuance of common stock upon vesting of restricted stock units, shares		6,000
Issuance of common stock upon vesting of restricted stock units, amount	0	$ 0	0	0
Value of stock-based compensation	44,000	0	44,000	0
Net income	2,414,000	$ 0	0	2,414,000
Repurchase of common stock, shares		(84,000)
Repurchase of common stock, amount	(482,000)	$ (1,000)	(481,000)	0
Balance, shares at Dec. 31, 2023		1,743,000
Balance, amount at Dec. 31, 2023	$ 15,532,000	$ 17,000	$ 16,176,000	$ (661,000)