Selected Quarterly Financial Information (Unaudited) - Summarized Quarterly Results of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Quarterly Financial Data [Abstract]
Net sales	$ 896,126	$ 772,408	$ 870,943	$ 799,804	$ 854,234	$ 743,499	$ 931,509	$ 971,118	$ 3,339,281	$ 3,500,360	$ 3,360,492
Gross profit	123,517	133,360	138,404	130,929	132,034	112,327	127,922	123,239	526,210	495,522	429,994
Net income	$ 18,450	$ 15,807	$ 23,706	$ 26,345	$ 23,710	$ 10,646	$ 18,220	$ 19,342	$ 84,314	$ 71,922	$ 46,152
Basic (in dollars per share)	$ 0.35	$ 0.31	$ 0.47	$ 0.52	$ 0.47	$ 0.21	$ 0.37	$ 0.39	$ 1.65	$ 1.44	$ 0.94
Diluted (in dollars per share)	$ 0.34	$ 0.29	$ 0.46	$ 0.51	$ 0.46	$ 0.21	$ 0.36	$ 0.37	$ 1.60	$ 1.39	$ 0.89