Guarantor Financial Information (Condensed Consolidated Statements of Cash Flows) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	May 31, 2018	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Cash flows from operating activities:
Net income/(loss)		$ (29,138)	$ 10,328	$ 68,937	$ 17,726
Earnings in investments in subsidiaries		0	0	0	0
Other operating cash flows				59,110	179,811
Net cash provided by operating activities				128,047	197,537
Cash flows from investing activities:
Capital expenditures				(139,130)	(127,824)
Acquisitions	$ (51,100)			(51,089)	(12,369)
Investment in subsidiaries and affiliates				(6,500)	(2,250)
Proceeds from sale of investment in subsidiary	$ 80,000			82,805	0
Note receivable from affiliates				0	0
Gross proceeds from disposal of property, plant and equipment and other assets				2,244	3,603
Proceeds from insurance settlement				1,253	3,301
Payments related to routes and other intangibles				(294)	(4,635)
Net cash used by investing activities				(110,711)	(140,174)
Cash flows from financing activities:
Proceeds from long-term debt				623,695	16,405
Payments on long-term debt				(650,976)	(67,974)
Borrowings from revolving credit facility				247,975	80,000
Payments on revolving credit facility				(221,632)	(80,327)
Net cash overdraft financing				4,517	(1,077)
Deferred loan costs				(9,324)	(1,177)
Issuance of common stock				182	22
Contributions from parent				0
Minimum withholding taxes paid on stock awards				(2,123)	(2,091)
Distributions to noncontrolling interests				(983)	(2,135)
Net cash used by financing activities				(8,669)	(58,354)
Effect of exchange rate changes on cash				(11,321)	11,233
Net increase/(decrease) in cash, cash equivalents and restricted cash				(2,654)	10,242
Cash, cash equivalents and restricted cash at beginning of period				106,916	114,857
Cash, cash equivalents and restricted cash at end of period		104,262	125,099	104,262	125,099
Parent [Member]
Cash flows from operating activities:
Net income/(loss)		(29,138)	10,328	68,937	17,726
Earnings in investments in subsidiaries		(34,159)	(26,513)	(179,039)	(64,831)
Other operating cash flows				143,415	135,192
Net cash provided by operating activities				33,313	88,087
Cash flows from investing activities:
Capital expenditures				(45,028)	(41,907)
Acquisitions				(51,089)	0
Investment in subsidiaries and affiliates				(6,500)	(2,250)
Proceeds from sale of investment in subsidiary				80,000
Note receivable from affiliates				0	0
Gross proceeds from disposal of property, plant and equipment and other assets				873	1,704
Proceeds from insurance settlement				750	0
Payments related to routes and other intangibles				(246)	(4,635)
Net cash used by investing activities				(21,240)	(47,088)
Cash flows from financing activities:
Proceeds from long-term debt				0	0
Payments on long-term debt				(10,066)	(43,063)
Borrowings from revolving credit facility				131,000	80,000
Payments on revolving credit facility				(131,000)	(75,000)
Net cash overdraft financing				0	0
Deferred loan costs				(824)	(1,177)
Issuance of common stock				182	22
Contributions from parent				0
Minimum withholding taxes paid on stock awards				(2,118)	(2,077)
Distributions to noncontrolling interests				0	0
Net cash used by financing activities				(12,826)	(41,295)
Effect of exchange rate changes on cash				0	0
Net increase/(decrease) in cash, cash equivalents and restricted cash				(753)	(296)
Cash, cash equivalents and restricted cash at beginning of period				1,827	1,573
Cash, cash equivalents and restricted cash at end of period		1,074	1,277	1,074	1,277
Guarantors [Member]
Cash flows from operating activities:
Net income/(loss)		35,348	16,360	70,625	41,911
Earnings in investments in subsidiaries		0	0	0	0
Other operating cash flows				(30,510)	(36,021)
Net cash provided by operating activities				40,115	5,890
Cash flows from investing activities:
Capital expenditures				(45,759)	(38,269)
Acquisitions				0	(12,369)
Investment in subsidiaries and affiliates				(198,880)	0
Proceeds from sale of investment in subsidiary				0
Note receivable from affiliates				201,880	39,733
Gross proceeds from disposal of property, plant and equipment and other assets				610	978
Proceeds from insurance settlement				503	0
Payments related to routes and other intangibles				0	0
Net cash used by investing activities				(41,646)	(9,927)
Cash flows from financing activities:
Proceeds from long-term debt				0	0
Payments on long-term debt				0	0
Borrowings from revolving credit facility				0	0
Payments on revolving credit facility				0	0
Net cash overdraft financing				0	0
Deferred loan costs				0	0
Issuance of common stock				0	0
Contributions from parent				0
Minimum withholding taxes paid on stock awards				0	0
Distributions to noncontrolling interests				0	0
Net cash used by financing activities				0	0
Effect of exchange rate changes on cash				0	0
Net increase/(decrease) in cash, cash equivalents and restricted cash				(1,531)	(4,037)
Cash, cash equivalents and restricted cash at beginning of period				2,993	5,754
Cash, cash equivalents and restricted cash at end of period		1,462	1,717	1,462	1,717
Non-guarantors [Member]
Cash flows from operating activities:
Net income/(loss)		(1,189)	10,153	108,414	22,920
Earnings in investments in subsidiaries		0	0	0	0
Other operating cash flows				(53,795)	80,640
Net cash provided by operating activities				54,619	103,560
Cash flows from investing activities:
Capital expenditures				(48,343)	(47,648)
Acquisitions				0	0
Investment in subsidiaries and affiliates				0	0
Proceeds from sale of investment in subsidiary				2,805
Note receivable from affiliates				(201,880)	(39,733)
Gross proceeds from disposal of property, plant and equipment and other assets				761	921
Proceeds from insurance settlement				0	3,301
Payments related to routes and other intangibles				(48)	0
Net cash used by investing activities				(246,705)	(83,159)
Cash flows from financing activities:
Proceeds from long-term debt				623,695	16,405
Payments on long-term debt				(640,910)	(24,911)
Borrowings from revolving credit facility				116,975	0
Payments on revolving credit facility				(90,632)	(5,327)
Net cash overdraft financing				4,517	(1,077)
Deferred loan costs				(8,500)	0
Issuance of common stock				0	0
Contributions from parent				198,880
Minimum withholding taxes paid on stock awards				(5)	(14)
Distributions to noncontrolling interests				(983)	(2,135)
Net cash used by financing activities				203,037	(17,059)
Effect of exchange rate changes on cash				(11,321)	11,233
Net increase/(decrease) in cash, cash equivalents and restricted cash				(370)	14,575
Cash, cash equivalents and restricted cash at beginning of period				102,096	107,530
Cash, cash equivalents and restricted cash at end of period		101,726	122,105	101,726	122,105
Eliminations [Member]
Cash flows from operating activities:
Net income/(loss)		(34,159)	(26,513)	(179,039)	(64,831)
Earnings in investments in subsidiaries		34,159	26,513	179,039	64,831
Other operating cash flows				0	0
Net cash provided by operating activities				0	0
Cash flows from investing activities:
Capital expenditures				0	0
Acquisitions				0	0
Investment in subsidiaries and affiliates				198,880	0
Proceeds from sale of investment in subsidiary				0
Note receivable from affiliates				0	0
Gross proceeds from disposal of property, plant and equipment and other assets				0	0
Proceeds from insurance settlement				0	0
Payments related to routes and other intangibles				0	0
Net cash used by investing activities				198,880	0
Cash flows from financing activities:
Proceeds from long-term debt				0	0
Payments on long-term debt				0	0
Borrowings from revolving credit facility				0	0
Payments on revolving credit facility				0	0
Net cash overdraft financing				0	0
Deferred loan costs				0	0
Issuance of common stock				0	0
Contributions from parent				(198,880)
Minimum withholding taxes paid on stock awards				0	0
Distributions to noncontrolling interests				0	0
Net cash used by financing activities				(198,880)	0
Effect of exchange rate changes on cash				0	0
Net increase/(decrease) in cash, cash equivalents and restricted cash				0	0
Cash, cash equivalents and restricted cash at beginning of period				0	0
Cash, cash equivalents and restricted cash at end of period		$ 0	$ 0	$ 0	$ 0