Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 26, 2016	Jun. 28, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 28,736	$ 21,223
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	5,121	3,819
Amortization of intangible assets	5,993	3,641
Stock-based compensation expense	3,133	2,194
Deferred financing cost amortization	291	215
Deferred income taxes	(1,903)	(534)
(Gain) loss on sale of fixed assets	41	(11)
Other non-cash items	190	159
Change in operating assets and liabilities, net of effects of acquisitions:
Trade receivables	(46,016)	(12,554)
Inventories	(979)	(129)
Prepaid expenses and other	1,683	3,410
Accounts payable and accrued liabilities	21,151	6,104
Payments on deferred compensation obligations	(163)	(174)
Net cash provided by operating activities	17,278	27,363
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(6,070)	(3,235)
Proceeds from sale of property and equipment	201	17
Business acquisitions	(67,005)	(60,513)
Other investing activities	(13)	(13)
Net cash used in investing activities	(72,887)	(63,744)
CASH FLOWS FROM FINANCING ACTIVITIES
Term debt borrowings		75,000
Term debt repayments	(2,679)
Borrowings on revolver	207,497	92,952
Repayments on revolver	(147,588)	(119,006)
Payment of deferred fnancing costs	(26)	(1,611)
Stock repurchases under buyback program	(4,667)	(5,650)
Realization of excess tax benefit on stock-based compensation	1,208	1,215
Proceeds from exercise of stock options, including tax benefit	1,863	16
Other financing activities	(51)	(52)
Net cash provided by financing activities	55,557	42,864
Increase (decrease) in cash and cash equivalents	(52)	6,483
Cash and cash equivalents at beginning of year	87	123
Cash and cash equivalents at end of period	$ 35	$ 6,606