Condensed Consolidated Income Statements (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Net sales	$ 924,559	$ 932,566
Cost of goods sold	818,642	841,032
Gross profit	105,917	91,534
Selling, general and administrative expenses	73,187	63,266
Depreciation expense	3,240	2,070
Intangible amortization expense	5,011	3,154
Change in fair value of contingent consideration	16,881	169
Operating income	7,598	22,875
Interest expense	1,585	589
Interest income	(881)	(1,015)
Other (income) expense, net	114	577
Income before income taxes	6,780	22,724
Provision for income taxes	2,633	7,908
Net income	$ 4,147	$ 14,816
Per share data:
Net income per common share, basic (in dollars per share)	$ 0.16	$ 0.58
Weighted-average shares outstanding, basic (in shares)	25,434	25,523
Net income per common share, diluted (in dollars per share)	$ 0.16	$ 0.58
Weighted-average shares outstanding, diluted (in shares)	25,579	25,762