CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Allowance for accounts receivable	$ 519	$ 469
Accumulated amortization on other intangibles, deferred costs and investments	$ 15,944	$ 15,906
Preferred Stock, Shares Authorized	1,500	1,500
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Treasury stock, shares (in shares)	1,753	1,758
Class A Common Stock
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized	35,000	35,000
Common Stock, Shares, Issued	7,866	6,835
Class B Common Stock
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized	3,500	3,500
Common Stock, Shares, Issued	0	965