CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Revenue	$ 437,303	$ 352,277
Cost of goods and services	316,459	255,533
Gross profit	120,844	96,744
Selling, general and administrative expenses	105,807	78,884
Income from operations	15,037	17,860
Other income (expense)
Interest expense	(16,839)	(13,295)
Interest income	197	6
Other, net	(468)	(140)
Total other expense, net	(17,110)	(13,429)
Income (loss) before taxes from continuing operations	(2,073)	4,431
Benefit for income taxes	(24,904)	(2,613)
Income from continuing operations	22,831	7,044
Discontinued operations:
Income from operations of discontinued operations	11,466	8,545
Provision from income taxes	3,308	3,325
Income from discontinued operations	8,158	5,220
Net income	$ 30,989	$ 12,264
Income from continuing operations (in dollars per share)	$ 0.54	$ 0.18
Income from discontinued operations (in dollars per share)	0.19	0.13
Basic earnings per common share (in Dollars per share)	$ 0.74	$ 0.31
Weighted-average shares outstanding (in shares)	41,923	39,336
Income from continuing operations (in dollars per share)	$ 0.53	$ 0.17
Income from discontinued operations (in dollars per share)	0.19	0.12
Diluted earnings per common share (in dollars per share)	$ 0.72	$ 0.29
Weighted-average shares outstanding (in shares)	43,336	42,312
Dividends paid per common share (in Dollars per share)	$ 0.07	$ 0.06
Dividends paid per common share	$ 30,989	$ 12,264
Other comprehensive income (loss), net of taxes:
Net income	(1,289)	(13,479)
Pension and other post retirement plans	9,559	544
Other comprehensive income (loss), net of taxes:	88	1,623
Pension and other post retirement plans	8,358	(11,312)
Change in cash flow hedges	$ 39,347	$ 952