Quarterly report pursuant to Section 13 or 15(d)

Note 1 - Basis of Presentation and Summary of Significant Accounting Policies - Cumulative Effect Adjustments to Retained Earnings (Details)

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Note 1 - Basis of Presentation and Summary of Significant Accounting Policies - Cumulative Effect Adjustments to Retained Earnings (Details) - USD ($)
$ in Thousands
Jul. 01, 2018
Jun. 30, 2018
Net cumulative effect adjustments to Retained earnings on July 1, 2018 due to the adoption of new accounting standards   $ 98
Retained Earnings [Member]    
Net cumulative effect adjustments to Retained earnings on July 1, 2018 due to the adoption of new accounting standards $ 24,780 $ 24,780
Accounting Standards Update 2014-09 [Member] | Retained Earnings [Member]    
Net cumulative effect adjustments to Retained earnings on July 1, 2018 due to the adoption of new accounting standards 98  
Accounting Standards Update 2016-01 [Member] | Retained Earnings [Member]    
Net cumulative effect adjustments to Retained earnings on July 1, 2018 due to the adoption of new accounting standards 27,053  
Accounting Standards Update 2018-02 [Member] | Retained Earnings [Member]    
Net cumulative effect adjustments to Retained earnings on July 1, 2018 due to the adoption of new accounting standards $ (2,371)