Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Operating activities
Net loss	$ (6,627)	$ (3,887)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	13,121	12,190
Other	3,113	(458)
Changes in operating assets and liabilities:
Accounts receivable	10,593	1,771
Operating liabilities	(13,566)	(8,695)
Other, net	(11,284)	(5,078)
Adjustments to reconcile net loss to net cash provided by operating activities:	1,977	(270)
Net cash used in operating activities	(4,650)	(4,157)
Capital expenditures:
Equipment	(20,066)	(21,616)
Land and building	(126)	(911)
Purchases of businesses, net of cash acquired	(86)	(7,452)
Other	1,001	1,207
Net cash used in investing activities	(19,277)	(28,772)
Financing activities
Revolving credit facility proceeds, net	28,500	33,000
Purchase of common shares for treasury	(6,067)	(2,002)
Sale of common shares from treasury	4,460	5,340
Dividends	(623)	(650)
Payments of notes payable	(5,163)	(3,123)
Net cash provided by financing activities	21,107	32,565
Decrease in cash	(2,820)	(364)
Cash, beginning of period	13,121	9,006
Cash, end of period	10,301	8,642
Supplemental cash flow information follows:
Interest paid	1,631	1,482
Income taxes paid	$ 1,449	$ 2,506