Note 2. Acquisitions (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Jul. 18, 2016
Business Acquisition [Line Items]
Business Combination, Bargain Purchase, Gain Recognized, Amount	$ 0	$ 0	$ 925	$ 0
Aircom
Business Acquisition [Line Items]
Business Acquisition, Date of Acquisition Agreement			Jul. 18, 2016
Business Combination, Consideration Transferred			$ 3,500
Payments to Acquire Businesses, Gross			2,500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets					$ 6,400
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities					$ 1,400
Business Combination, Bargain Purchase, Gain Recognized, Amount			925
Nontrade Receivable, Current | Aircom
Business Acquisition [Line Items]
Business Combination, Consideration Transferred, Other			1,000
Deferred Tax Liability | Aircom
Business Acquisition [Line Items]
Business Combination, Consideration Transferred, Liabilities Incurred			$ 600