Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Trade, allowance	$ 5,003	$ 4,526
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	10,000,000	10,000,000
Preferred stock, issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	40,000,000	40,000,000
Common stock, issued (in shares)	22,269,157	34,574,807
Common stock, outstanding (in shares)	22,269,157	22,348,022
Treasury stock (in shares)	0	12,226,785

Amount of allowance for credit loss on accounts receivable, classified as current.

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