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Note 15 - Segment Information (Details Textual)
9 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Number of Company Operated Design Centers 144  
Number of Independently Operated Design Centers 160  
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Retail Segment [Member]    
Concentration Risk, Percentage 79.80% 78.70%
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Wholesale Segment [Member]    
Concentration Risk, Percentage 20.20%