Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 27, 2016	Mar. 29, 2015
Operating activities
Net income before attribution to noncontrolling interests	$ 28,051	$ 24,239
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for uncollectible accounts and notes receivable	216	659
Depreciation and amortization	9,744	10,041
Deferred income taxes	7,141	(36)
Stock-based compensation expense	2,172	2,264
Other	1,101	1,180
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	6,457	(1,312)
Income taxes receivable	223	5,899
Inventories	(612)	1,043
Prepaid expenses	1,938	2,755
Other current assets	(314)	(303)
Other assets and liabilities	(614)	(154)
Accounts payable	(10,007)	(3,828)
Income and other taxes payable	277	167
Accrued expenses and other current liabilities	(16,738)	(2,291)
Deferred revenue	934	(74)
Net cash provided by operating activities	29,969	40,249
Investing activities
Purchases of property and equipment	(10,249)	(7,558)
Loans issued	(917)	(506)
Repayments of loans issued	1,275	1,083
Acquisitions, net of cash acquired	(11,202)	(341)
Other	159	20
Net cash used in investing activities	(20,934)	(7,302)
Financing activities
Net proceeds from issuance of long-term debt	61,500	549
Cash dividends paid	(6,628)	(5,545)
Excess tax benefit on equity awards	3,884	5,091
Tax payments for equity award issuances	(5,670)	(5,557)
Proceeds from exercise of stock options	922	2,210
Acquisition of Company common stock	(66,033)	(24,765)
Distributions to noncontrolling interest holders	(980)	(1,705)
Other	294	253
Net cash used in financing activities	(12,711)	(29,469)
Effect of exchange rate changes on cash and cash equivalents	(58)	(76)
Change in cash and cash equivalents	(3,734)	3,402
Cash and cash equivalents at beginning of period	21,006	20,122
Cash and cash equivalents at end of period	$ 17,272	$ 23,524