Shareholders' Equity - Shareholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	$ 44,685
Dividends declared	(14,496)
Foreign currency translation adjustment	(2)	$ 5
Net loss	(1,898)	(832)
Balance, end of period	28,344	73,326
Common stock and additional paid-in capital [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	46,071	74,934
Dividends declared	(14,496)	0
Issuance of common stock and warrants, net	0	1
Share-based compensation expense	26	22
Proceeds from employee stock purchase plan	7	0
Balance, end of period	31,608	74,957
Accumulated other comprehensive loss [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(310)	(288)
Unrealized loss on available-for-sale securities, net of tax	22	0
Foreign currency translation adjustment	(2)	5
Balance, end of period	(290)	(283)
Accumulated deficit [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(1,076)	(516)
Net loss	(1,898)	(832)
Balance, end of period	$ (2,974)	$ (1,348)