Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Allowance for doubtful accounts	$ 541	$ 528
Property and equipment, accumulated depreciation and amortization	$ 156,243	$ 153,364
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	15,000,000	15,000,000
Common stock, shares issued (in shares)	9,637,008	9,587,990
Common stock, shares outstanding (in shares)	9,637,008	9,587,990