Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 25, 2016	Dec. 27, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ (6,009)	$ 41,381	$ 23,944
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	69,335	34,261	34,530
Income tax, non-cash changes	(3,395)	(4,669)	(9,531)
Impairments of long-lived assets and other charges			2,688
Stock-based compensation	2,576	3,618	2,807
Debt amortization	7,328
Other non-cash items	1,133	812	1,400
Accounts receivable	4,599	8,043	(14,030)
Inventories	(1,264)	(22,339)	11,509
Other assets and liabilities	(8,214)	6,244	2,469
Accounts payable	1,411	15,880	(1,132)
Income taxes	(3,790)	(4,740)	4,695
NET CASH PROVIDED BY OPERATING ACTIVITIES	63,710	78,491	59,349
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to property, plant and equipment	(70,937)	(39,575)	(39,543)
Acquisition of Uniwheels, net of cash acquired	(706,733)
Proceeds from sales and maturities of investments		200	3,750
Purchase of investments			(950)
Proceeds from sales of fixed assets	56	4,337	1,815
Other			(18)
NET CASH USED IN INVESTING ACTIVITIES	(777,614)	(35,038)	(34,946)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of long-term debt	975,571
Proceeds from issuance of redeemable preferred shares	150,000
Debt repayment	(323,177)
Cash dividends paid	(19,473)	(18,340)	(19,082)
Cash paid for common stock repurchase	(5,014)	(20,719)	(19,638)
Payments related to tax withholdings for stock-based compensation	(1,687)
Net increase (decrease) in short term debt	(10,877)
Proceeds from borrowings on revolving credit facility	71,750
Repayments of borrowings on revolving credit facility	(100,650)
Proceeds from exercise of stock options	41	1,641	7,265
Redeemable preferred shares issuance costs	(3,737)
Financing costs paid	(31,640)
Excess tax benefits from exercise of stock options		91	107
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	701,107	(37,327)	(31,348)
Effect of exchange rate changes on cash	1,371	(376)	(3,470)
Net increase (decrease) in cash and cash equivalents	(11,426)	5,750	(10,415)
Cash and cash equivalents at the beginning of the period	57,786	52,036	62,451
Cash and cash equivalents at the end of the period	$ 46,360	$ 57,786	$ 52,036