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Note 10 - Debt - Long-term Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Jun. 30, 2018
Funded debt $ 299,500 $ 194,000
Issuance cost (62) (228)
Total long-term debt 299,438 193,772
Line of Credit [Member]    
Funded debt $ 299,500 $ 194,000