Note 15 - Income Taxes - Reconciliation of Income Tax Rate (Details)	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Reconciliation to effective tax rate:
Provision for income taxes at the anticipated annual tax rate	32.00%	34.40%	30.40%	34.50%
Uncertain tax positions	4.20%	(2.90%)	(2.40%)	(0.50%)
Disqualifying dispositions	9.30%	(1.40%)	(3.60%)	(0.80%)
Deferred tax asset adjustment			(2.40%)
Other	(2.20%)	0.40%	0.70%	(0.90%)
Effective tax rate	43.30%	30.50%	22.70%	32.30%