Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016
Operating activities
Net income	$ 10,336	$ 9,121
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	25,190	23,631
Other	(909)	1,135
Changes in operating assets and liabilities:
Accounts receivable	(9,662)	(20,816)
Operating liabilities	1,123	570
Other, net	1,589	4,993
Adjustments to reconcile net income to net cash provided by operating activities:	17,331	9,513
Net cash provided by operating activities	27,667	18,634
Capital expenditures:
Equipment	(37,858)	(36,373)
Land and building	(2,992)	(1,463)
Purchases of businesses, net of cash acquired	(7,452)	(3,497)
Other	2,667	671
Net cash used in investing activities	(45,635)	(40,662)
Financing activities
Revolving credit facility proceeds, net	35,500	31,500
Purchase of common shares for treasury	(17,002)	(11,627)
Sale of common shares from treasury	10,136	8,155
Dividends	(1,268)	(1,314)
Payments of notes payable	(8,721)	(7,350)
Net cash provided by financing activities	18,645	19,364
Increase/(decrease) in cash	677	(2,664)
Cash, beginning of period	9,006	16,030
Cash, end of period	9,683	13,366
Supplemental cash flow information follows:
Interest paid	2,480	1,035
Income taxes paid	$ 3,179	$ 505