Intangible Assets (Schedule of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Sep. 30, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 192,260	$ 191,166
Accumulated Amortization	(84,028)	(67,869)
Net Carrying Amount	108,232	123,297
Trade name and trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,904	3,886
Accumulated Amortization	(1,735)	(1,368)
Net Carrying Amount	2,169	2,518
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	46,201	45,694
Accumulated Amortization	(26,635)	(22,427)
Net Carrying Amount	19,566	23,267
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	142,155	141,586
Accumulated Amortization	(55,658)	(44,074)
Net Carrying Amount	$ 86,497	$ 97,512