Financing Arrangements (Details 1) - USD ($) $ in Thousands	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014
2016 (Jan-Sept)	$ 10,718
2017	14,836
2018	14,146
2019	14,798
2020	12,038
Thereafter	1,084,235
Subtotal	1,150,771
Less: current portion	(14,287)
Total long-term debt	722,888	$ 170,200	$ 180,657
Senior Notes [Member]
2016 (Jan-Sept)	0
2017	0
2018	0
2019	0
2020	0
Thereafter	300,000
Subtotal	290,091	0	0
Less: current portion	0	0	0
Total long-term debt	290,091	0	0
Term Loan B Facility [Member]
2016 (Jan-Sept)	3,375
2017	4,500
2018	4,500
2019	4,500
2020	4,500
Thereafter	427,500
Subtotal	448,875
Less: current portion	(4,500)
Total long-term debt	444,375
ABL Facility [Member]
2016 (Jan-Sept)	0
2017	0
2018	0
2019	0
2020	0
Thereafter	351,702
Subtotal	351,702
Less: current portion	0
Total long-term debt	351,702
Equipment Financing Facilities [Member]
2016 (Jan-Sept)	7,343
2017	10,336
2018	9,646
2019	10,298
2020	7,538
Thereafter	5,033
Subtotal	50,194
Less: current portion	(9,787)	(5,069)	(5,439)
Total long-term debt	$ 40,407	$ 20,419	$ 24,190