Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net Income (Loss) Per Share [Abstract]
Minimum percentage of class A common stock declared dividend excess over class B dividend			10.00%
Class A Common Stock [Member]
Numerator: [Abstract]
Allocation of net income (loss)	$ (671)	$ (8,714)	$ 5,421	$ (4,529)
Denominator: [Abstract]
Weighted-average shares outstanding (in shares)	27,595,000	26,781,000	27,391,000	26,216,000
Basic net income (loss) per share (in dollars per share)	$ (0.02)	$ (0.33)	$ 0.2	$ (0.17)
Numerator: [Abstract]
Allocation of net income (loss)	$ (671)	$ (8,714)	$ 5,421	$ (4,529)
Denominator: [Abstract]
Number of shares used in basic computation (in shares)	27,595,000	26,781,000	27,391,000	26,216,000
Weighted-average shares effect of dilutive securities [Abstract]
Director and employee stock options (in shares)	0	0	117,000	0
Number of shares used in diluted computation (in shares)	27,595,000	26,781,000	27,508,000	26,216,000
Diluted net income (loss) per share (in dollars per share)	$ (0.02)	$ (0.33)	$ 0.2	$ (0.17)
Class B Common Stock [Member]
Numerator: [Abstract]
Allocation of net income (loss)	$ (134)	$ (1,662)	$ 975	$ (910)
Denominator: [Abstract]
Weighted-average shares outstanding (in shares)	5,577,000	5,577,000	5,577,000	5,577,000
Basic net income (loss) per share (in dollars per share)	$ (0.02)	$ (0.3)	$ 0.17	$ (0.16)
Numerator: [Abstract]
Allocation of net income (loss)	$ (134)	$ (1,662)	$ 975	$ (910)
Denominator: [Abstract]
Number of shares used in basic computation (in shares)	5,577,000	5,577,000	5,577,000	5,577,000
Weighted-average shares effect of dilutive securities [Abstract]
Director and employee stock options (in shares)	0	0	0	0
Number of shares used in diluted computation (in shares)	5,577,000	5,577,000	5,577,000	5,577,000
Diluted net income (loss) per share (in dollars per share)	$ (0.02)	$ (0.3)	$ 0.17	$ (0.16)
Options [Member]
Antidilutive Securities Excluded from Computation of Earnings (Loss) Per Share [Abstract]
Number of options to purchase Class A shares excluded (in shares)	0	0	2,245,435	0