Consolidating Condensed Financial Information of Guarantor Subsidiaries - Consolidating Condensed Statement of Cash Flows (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 26, 2016	Mar. 28, 2015
Condensed Financial Statements, Captions [Line Items]
Net cash provided (used) by operating activities	$ (50,843)	$ (98,521)
Additions to property, plant and equipment	(12,795)	(11,025)
Payments to acquire companies, net of cash acquired	(68,901)	(16,000)
Proceeds from short-term investments	0	9,997
Change in restricted cash and cash equivalents	1,211	1,700
Investment in short term investments	0	(17)
Other investing activities	(500)	(331)
Intercompany investing activities	0	0
Net cash used in investing activities	(80,985)	(15,676)
Repayments of long-term debt	(400,145)	(50,141)
Borrowings on revolving line of credit	280,000	186,000
Repayments on revolving line of credit	(178,000)	(71,000)
Issuance of long-term debt	400,000	0
Proceeds from issuance of common stock	0	1,220
Excess tax benefits from stock-based awards	1,181	351
Repurchase of common stock	(1,722)	(17,164)
Distribution to parent	0	0
Distribution to noncontrolling interest	(592)	(1,680)
Payment of financing costs	(6,362)	0
Intercompany financing activities	0	0
Net cash provided by financing activities	94,360	47,586
Effect of exchange rates on cash	(290)	(122)
Net decrease in cash and cash equivalents	(37,758)	(66,733)
Cash and equivalents at beginning of period	47,584	78,676
Cash and equivalents at end of period	9,826	11,943
Parent
Condensed Financial Statements, Captions [Line Items]
Net cash provided (used) by operating activities	(12,121)	(36,828)
Additions to property, plant and equipment	(2,394)	(1,359)
Payments to acquire companies, net of cash acquired	(60,916)	(16,000)
Proceeds from short-term investments		9,997
Change in restricted cash and cash equivalents	1,211	1,700
Investment in short term investments		(17)
Other investing activities	(500)	(331)
Intercompany investing activities	(9,227)	(27,949)
Net cash used in investing activities	(71,826)	(33,959)
Repayments of long-term debt	(400,130)	(50,131)
Borrowings on revolving line of credit	280,000	186,000
Repayments on revolving line of credit	(178,000)	(71,000)
Issuance of long-term debt	400,000
Proceeds from issuance of common stock		1,220
Excess tax benefits from stock-based awards	1,181	351
Repurchase of common stock	(1,722)	(17,164)
Distribution to parent	0	0
Distribution to noncontrolling interest	0	0
Payment of financing costs	(6,362)
Intercompany financing activities	(44,782)	(34,891)
Net cash provided by financing activities	50,185	14,385
Effect of exchange rates on cash	(698)	(910)
Net decrease in cash and cash equivalents	(34,460)	(57,312)
Cash and equivalents at beginning of period	36,280	63,471
Cash and equivalents at end of period	1,820	6,159
Non- Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash provided (used) by operating activities	(6,240)	(5,623)
Additions to property, plant and equipment	(412)	(154)
Payments to acquire companies, net of cash acquired	0	0
Proceeds from short-term investments		0
Change in restricted cash and cash equivalents	0	0
Investment in short term investments		0
Other investing activities	0	0
Intercompany investing activities	0	0
Net cash used in investing activities	(412)	(154)
Repayments of long-term debt	0	0
Borrowings on revolving line of credit	0	0
Repayments on revolving line of credit	0	0
Issuance of long-term debt	0
Proceeds from issuance of common stock		0
Excess tax benefits from stock-based awards	0	0
Repurchase of common stock	0	0
Distribution to parent	(4,884)	(6,719)
Distribution to noncontrolling interest	(592)	(1,680)
Payment of financing costs	0
Intercompany financing activities	6,939	5,102
Net cash provided by financing activities	1,463	(3,297)
Effect of exchange rates on cash	250	577
Net decrease in cash and cash equivalents	(4,939)	(8,497)
Cash and equivalents at beginning of period	10,022	12,806
Cash and equivalents at end of period	5,083	4,309
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash provided (used) by operating activities	(27,598)	(49,351)
Additions to property, plant and equipment	(9,989)	(9,512)
Payments to acquire companies, net of cash acquired	(7,985)	0
Proceeds from short-term investments		0
Change in restricted cash and cash equivalents	0	0
Investment in short term investments		0
Other investing activities	0	0
Intercompany investing activities	47,070	57,738
Net cash used in investing activities	29,096	48,226
Repayments of long-term debt	(15)	(10)
Borrowings on revolving line of credit	0	0
Repayments on revolving line of credit	0	0
Issuance of long-term debt	0
Proceeds from issuance of common stock		0
Excess tax benefits from stock-based awards	0	0
Repurchase of common stock	0	0
Distribution to parent	0	0
Distribution to noncontrolling interest	0	0
Payment of financing costs	0
Intercompany financing activities	0	0
Net cash provided by financing activities	(15)	(10)
Effect of exchange rates on cash	158	211
Net decrease in cash and cash equivalents	1,641	(924)
Cash and equivalents at beginning of period	1,282	2,399
Cash and equivalents at end of period	2,923	1,475
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net cash provided (used) by operating activities	(4,884)	(6,719)
Additions to property, plant and equipment	0	0
Payments to acquire companies, net of cash acquired	0	0
Proceeds from short-term investments		0
Change in restricted cash and cash equivalents	0	0
Investment in short term investments		0
Other investing activities	0	0
Intercompany investing activities	(37,843)	(29,789)
Net cash used in investing activities	(37,843)	(29,789)
Repayments of long-term debt	0	0
Borrowings on revolving line of credit	0	0
Repayments on revolving line of credit	0	0
Issuance of long-term debt	0
Proceeds from issuance of common stock		0
Excess tax benefits from stock-based awards	0	0
Repurchase of common stock	0	0
Distribution to parent	4,884	6,719
Distribution to noncontrolling interest	0	0
Payment of financing costs	0
Intercompany financing activities	37,843	29,789
Net cash provided by financing activities	42,727	36,508
Effect of exchange rates on cash	0	0
Net decrease in cash and cash equivalents	0	0
Cash and equivalents at beginning of period	0	0
Cash and equivalents at end of period	$ 0	$ 0