CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ DEFICIT - USD ($) $ in Thousands	Total	Common Stock Class A	Common Stock Class B Common Stock	APIC	Accumulated deficit	Noncontrolling Interest
Balance at beginning of period (in shares) at Dec. 31, 2022		2,900,000	11,278,000
Balance at beginning of period at Dec. 31, 2022	$ 5,595	$ 3	$ 11	$ 2,611	$ (344)	$ 3,314
Stock-based compensation	94			94
Warrants exercised (in shares)		2,200
Warrants exercised	12			12
Net loss	(1,334)				(214)	(1,120)
Balance at end of period (in shares) at Mar. 31, 2023		2,902,200	11,278,000
Balance at end of period at Mar. 31, 2023	4,367	$ 3	$ 11	2,717	(558)	2,194
Balance at beginning of period (in shares) at Dec. 31, 2022		2,900,000	11,278,000
Balance at beginning of period at Dec. 31, 2022	5,595	$ 3	$ 11	2,611	(344)	3,314
Net loss	(6,800)
Balance at end of period (in shares) at Dec. 31, 2023		3,478,776	10,868,000
Balance at end of period at Dec. 31, 2023	(3,682)	$ 3	$ 11	3,067	(2,538)	(4,225)
Stock-based compensation	504			504
Issuance related to vesting of restricted stock units, net of tax withholdings (in shares)		88,386
Issuance related to vesting of restricted stock units, net of tax withholdings	0	$ 1		(1)
Warrants exercised (in shares)		39,101
Warrants exercised	215			215
Stock options exercised (in shares)		8,338
Stock options exercised	79			79
Issuance of stock in lieu of cash bonus, net of tax withholdings (in shares)		69,677
Issuance of stock in lieu of cash bonus, net of tax withholdings	913			913
Net loss	(3,819)				(775)	(3,044)
Noncontrolling interest rebalancing	0			(1,336)		1,336
Balance at end of period (in shares) at Mar. 31, 2024		3,684,278	10,868,000
Balance at end of period at Mar. 31, 2024	$ (5,790)	$ 4	$ 11	$ 3,441	$ (3,313)	$ (5,933)