v3.26.1
Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)
shares in Thousands, $ in Thousands
Jun. 30, 2026
Dec. 31, 2025
allowance for doubtful accounts $ 8,972 $ 7,876
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, authorized (in shares) 10,000 10,000
Treasury stock, shares (in shares) 4,577 4,492
Series 2012-A Preferred Stock [Member]    
Preferred stock, designated (in shares) 8,750 8,750
Preferred stock, issued (in shares) 0 0
Preferred stock, outstanding (in shares) 0 0
Common Class A [Member]    
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, authorized (in shares) 35,000 35,000
Common stock, issued (in shares) 1,574 1,574
Common stock, outstanding (in shares) 1,574 1,574
Common Class B [Member]    
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, authorized (in shares) 200,000 200,000
Common stock, issued (in shares) 29,365 29,339
Common stock, outstanding (in shares) 24,788 24,847
Treasury stock, shares (in shares) 4,600