Note 15 - Income Taxes - Reconciliation of Income Tax Rate (Details)	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Provision for income taxes at the anticipated annual tax rate	28.90%	30.40%	28.90%	30.80%
Enactment of tax law changes	111.20%		(22.20%)
Uncertain tax positions	(4.80%)	(0.60%)	0.50%	(0.80%)
Difference between deferred and current tax rate related to the impairment of goodwill			12.10%
Other				(1.80%)
Tax impact related to share based compensation	0.30%	(0.50%)	(0.40%)	(0.60%)
Effective tax rate	135.60%	29.30%	18.90%	27.60%