Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Accounts receivables	$ 220	$ 209
Preferred stock, par (in dollars per share)	$ 1	$ 1
Preferred stock, authorized (in shares)	1,000,000	1,000,000
Preferred stock, issued (in shares)	0	0
Cost of common stock in treasury (in shares)	1,640,134	1,713,780
Common Stock
Common stock, par (in dollars per share)	$ 1	$ 1
Common stock, authorized (in shares)	50,000,000	50,000,000
Common stock, issued (in shares)	25,369,054	25,369,054
Class B Common Stock
Common stock, par (in dollars per share)	$ 1	$ 1
Common stock, authorized (in shares)	33,000,000	33,000,000
Common stock, issued (in shares)	6,984,584	6,984,584
Common stock, outstanding (in shares)	6,984,584	6,984,584