CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013
Cash Flows from Operating Activities
Net income	$ 18,433	$ 17,805
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation expense	29,245	28,889
Amortization of intangibles	198	166
Deferred income taxes	505	576
Gain on sale of property, plant and equipment	(38)	(763)
Amortization of debt costs	958	971
Amortization of deferred gain related to terminated interest rate agreements	(279)	(273)
Stock compensation expense	1,491	1,223
Increase in current assets less current liabilities (exclusive of acquisition)	(30,876)	(19,542)
Increase in other noncurrent assets (exclusive of acquisition)	(2,744)	(4,890)
Increase (decrease) in other noncurrent liabilities (exclusive of acquisition)	(5,135)	872
Other	(1)	15
Total adjustments	(6,676)	7,244
Net cash provided by operating activities	11,757	25,049
Cash Flows from Investing Activities
Additions to property, plant and equipment	(37,034)	(33,140)
Proceeds from the sale of property, plant and equipment	1,061	5,669
Acquisition of new territories, net of cash acquired	(12,163)	0
Net cash used in investing activities	(48,136)	(27,471)
Cash Flows from Financing Activities
Borrowings under revolving credit facility	75,000	55,000
Payment on revolving credit facility	(20,000)	(30,000)
Cash dividends paid	(4,631)	(4,620)
Excess tax expense from stock-based compensation	176	0
Principal payments on capital lease obligations	(2,925)	(2,572)
Other	(128)	(60)
Net cash provided by financing activities	47,492	17,748
Net increase in cash	11,113	15,326
Cash at beginning of period	11,761	10,399
Cash at end of period	22,874	25,725
Significant non-cash investing and financing activities:
Issuance of Class B Common Stock in connection with stock award	1,763	1,298
Capital lease obligations incurred	0	455
Additions to property, plant and equipment accrued and recorded in accounts payable, trade	$ 2,882	$ 2,522