Note 14 - Income Taxes - Reconciliation of Income Tax Rate (Details)	3 Months Ended	6 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2018	Dec. 31, 2017
Provision for income taxes at the anticipated annual tax rate	23.00%	28.90%	34.00%	23.00%	28.90%
Enactment of tax law changes		111.20%			(22.20%)
Uncertain tax positions	0.80%	(4.80%)		0.80%	0.50%
Difference between deferred and current tax rate related to the impairment of goodwill	0.60%			0.70%	12.10%
Tax impact related to share based compensation		0.30%		(0.50%)	(0.40%)
Effective tax rate	24.40%	135.60%		24.00%	18.90%

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to excess tax benefit for share-based compensation cost.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax contingencies. Includes, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.

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