Condensed Consolidated Statements of Cash Flows - Unaudited - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 27, 2015
Statement of Cash Flows [Abstract]
Proceeds from Notes Payable	$ 0	$ 164
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings (loss)	26,070	20,607
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	14,010	11,987
Pension and other post-retirement plan income	(1,188)	(1,510)
Equity-based compensation	1,759	2,655
Restructuring charges	2,175	5,229
Environmental Remediation Expense	0	14,541
Deferred income taxes	8,332	(15,241)
Gain (Loss) on Disposition of Assets	11,501	121
Gain on foreign currency hedges	(15)	0
Changes in assets and liabilities:
Accounts receivable	(5,971)	(3,518)
Inventories	(2,318)	(34)
Other assets	(489)	(222)
Accounts payable	2,717	(4,967)
Accrued payroll and benefits	2,376	(1,573)
Accrued expenses	(3,124)	(4,596)
Income taxes payable	690	1,715
Other liabilities	(1,543)	(656)
Pension and other post-retirement plans	(393)	(178)
Net cash provided by operating activities	31,587	24,118
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(14,467)	(6,559)
Proceeds from sale of assets	12,248	1,878
Payment for acquisition, net of cash acquired	(73,063)	0
Net cash used in investing activities	(75,282)	(4,681)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments of long-term debt	(2,048,000)	(943,300)
Proceeds from borrowings of long-term debt	2,053,300	958,800
Purchase of treasury stock	0	(15,623)
Dividends paid	(3,923)	(3,984)
Windfall tax benefits from equity awards	696	144
Proceeds from exercise of stock options	0	64
Net cash provided by (used in) financing activities	2,073	(3,899)
Repayments of Notes Payable	0	164
Effect of exchange rate changes on cash and cash equivalents	(873)	709
Net (decrease) increase in cash and cash equivalents	(42,495)	16,247
Cash and cash equivalents at beginning of period	156,928	134,508
Cash and cash equivalents at end of period	114,433	150,755
Supplemental cash flow information:
Cash paid for interest	2,292	1,046
Cash paid for income taxes, net	$ 10,136	$ 4,248