Condensed Consolidated Statements of Cash Flows - Unaudited - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 28, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 22,350	$ 25,367
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	8,925	8,093
Pension and other post-retirement plan (income) expense	(794)	3,297
Equity-based compensation	967	2,362
Restructuring charges	206	2,856
Prepaid pension assets	0	(4,422)
Deferred income taxes	2,877	0
(Gain) loss on sales of fixed assets	(11,351)	(1)
(Gain) loss on foreign currency hedges	(3)	0
Proceeds from settlement of foreign currency hedges	46	0
Changes in assets and liabilities:
Accounts receivable	(5,805)	(6,628)
Inventories	842	(2,914)
Other assets	(2,115)	(409)
Accounts payable	169	1,556
Accrued payroll and benefits	876	(704)
Accrued expenses	(2,594)	(2,588)
Income taxes payable	800	1,210
Other liabilities	(1,466)	(11,581)
Pension and other post-retirement plans	(175)	0
Net cash provided by operating activities	13,755	15,494
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(7,483)	(3,905)
Proceeds from sale of assets	12,237	3
Payment for acquisition, net of cash acquired	(73,063)	0
Net cash used in investing activities	(68,309)	(3,902)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments of long-term debt	(1,462,100)	(562,300)
Proceeds from borrowings of long-term debt	1,482,200	576,000
Purchase of treasury stock	0	(11,369)
Dividends paid	(2,612)	(2,668)
Windfall tax benefits from equity awards	696	147
Proceeds from exercise of stock options	0	64
Net cash provided by (used in) financing activities	18,184	(126)
Effect of exchange rate changes on cash and cash equivalents	(646)	817
Net (decrease) increase in cash and cash equivalents	(37,016)	12,283
Cash and cash equivalents at beginning of period	156,928	134,508
Cash and cash equivalents at end of period	119,912	146,791
Supplemental cash flow information:
Cash paid for interest	1,547	1,046
Cash paid for income taxes, net	$ 8,703	$ 4,248