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Note 3 - Acquisition of JSI Store Fixtures (Details Textual) - JSI Store Fixtures [Member] - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
May 21, 2021
Jun. 30, 2021
Jun. 30, 2021
Jun. 30, 2020
Business Acquisition, Percentage of Voting Interests Acquired 100.00%      
Business Combination, Consideration Transferred, Total $ 93,700      
Business Combination, Consideration Transferred, Liabilities Incurred 71,600      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables 9,252      
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment $ 1,800      
Business Acquisition, Pro Forma Net Income (Loss)     $ 19,312 $ 13,878
Selling, General and Administrative Expenses [Member]        
Business Combination, Acquisition Related Costs   $ 2,900 $ 2,900