Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings 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 (loss) income	$ (1,571)	$ 21,131	$ 43,609
Denominator: [Abstract]
Weighted-average shares outstanding (in shares)	26,409	25,388	23,707
Basic (loss) earnings per share (in dollars per share)	$ (0.06)	$ 0.83	$ 1.84
Numerator: [Abstract]
Allocation of net (loss) income	$ (1,571)	$ 21,131	$ 43,609
Denominator: [Abstract]
Number of shares used in basic computation (in shares)	26,409	25,388	23,707
Weighted-average shares effect of dilutive securities [Abstract]
Director and employee stock options (in shares)	0	146	180
Number of shares used in diluted computation (in shares)	26,409	25,534	23,887
Diluted (loss) earnings per share (in dollars per share)	$ (0.06)	$ 0.83	$ 1.83
Class B Common Stock [Member]
Numerator: [Abstract]
Allocation of net (loss) income	$ (388)	$ 4,123	$ 9,206
Denominator: [Abstract]
Weighted-average shares outstanding (in shares)	5,577	5,577	5,577
Basic (loss) earnings per share (in dollars per share)	$ (0.07)	$ 0.74	$ 1.65
Numerator: [Abstract]
Allocation of net (loss) income	$ (388)	$ 4,123	$ 9,206
Denominator: [Abstract]
Number of shares used in basic computation (in shares)	5,577	5,577	5,577
Weighted-average shares effect of dilutive securities [Abstract]
Diluted (loss) earnings per share (in dollars per share)	$ (0.07)	$ 0.74	$ 1.65