Note 4. Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Net Sales	$ 177,369	$ 160,897	$ 572,500	$ 514,871
Commercial and Industrial Sector
Net Sales	50,900	50,200	171,100	151,800
Education Sector
Net Sales	13,500	12,700	66,200	61,800
Financial Services Sector
Net Sales	16,900	17,800	53,200	48,900
Government Sector
Net Sales	19,100	17,600	55,000	68,900
Healthcare Sector
Net Sales	28,700	19,500	81,600	63,700
Hospitality Sector
Net Sales	$ 48,300	$ 43,100	$ 145,400	$ 119,800