Prior Period Adjustment Recorded in Current Period (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended		36 Months Ended
	Mar. 31, 2016	Sep. 30, 2015	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Jun. 30, 2015
Error Corrections and Prior Period Adjustments [Line Items]
Net sales	$ 532,721		$ 471,225	$ 1,691,303	$ 1,417,561
Net income	$ 16,662		$ 23,056	$ 65,050	$ 75,161
Adjustment of net sales | Previously reported
Error Corrections and Prior Period Adjustments [Line Items]
Net sales						$ 9,259
Adjustment of net sales | Prior period adjustment
Error Corrections and Prior Period Adjustments [Line Items]
Net sales		$ (9,259)
Adjustment of net income | Previously reported
Error Corrections and Prior Period Adjustments [Line Items]
Net income						$ 5,926
Adjustment of net income | Prior period adjustment
Error Corrections and Prior Period Adjustments [Line Items]
Net income		$ (5,926)