CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 24, 2010
Cash flows from operating activities:
Net income	$ 23,227	$ 15,880
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	11,989	11,888
Provision for doubtful accounts	4,424	5,828
Stock-based compensation	5,583	5,412
Deferred income taxes	899	1,986
Other operating activities	(471)	(141)
Changes in operating assets and liabilities:
Accounts receivable	(70,116)	(34,357)
Income taxes	6,950	1,345
Other assets	1,720	253
Accounts payable and other accrued expenses	19,634	1,489
Accrued wages and benefits	12,033	4,560
Workers' compensation claims reserve	735	83
Other liabilities	(144)	123
Net cash provided by operating activities	16,463	14,349
Cash flows from investing activities:
Capital expenditures	(6,251)	(5,256)
Change in restricted cash and cash equivalents	65,104	6,358
Purchases of restricted investments	(87,768)	0
Maturities of restricted investments	6,193	0
Other	(6,800)	(297)
Net cash (used in) provided by investing activities	(29,522)	805
Cash flows from financing activities:
Purchases and retirement of common stock	(50,143)	0
Net proceeds from sale of stock through options and employee benefit plans	874	755
Common stock repurchases for taxes upon vesting of restricted stock	(1,692)	(1,467)
Payments on debt	(302)	(282)
Other	674	48
Net cash used in financing activities	(50,589)	(946)
Effect of exchange rates on cash	(455)	396
Net change in cash and cash equivalents	(64,103)	14,604
CASH AND CASH EQUIVALENTS, beginning of period	163,153	124,377
CASH AND CASH EQUIVALENTS, end of period	99,050	138,981
Supplemental disclosure of cash flow information:
Interest	719	861
Income taxes	$ 6,870	$ 3,525