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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 28, 2014
Mar. 29, 2013
Cash flows from operating activities:    
Net income (loss) $ 1,656 $ (1,076)
Adjustments to reconcile net income (loss) to net cash from operating activities:    
Depreciation and amortization 5,161 5,159
Provision for doubtful accounts 3,487 1,652
Stock-based compensation 2,876 2,880
Deferred income taxes (1,433) (3,573)
Other operating activities (435) 180
Changes in operating assets and liabilities, net of acquisition:    
Accounts receivable 9,949 4,982
Income taxes 3,567 (2,136)
Other assets (331) 251
Accounts payable and other accrued expenses (3,307) (6,990)
Accrued wages and benefits 1,380 4,061
Workers’ compensation claims reserve 261 549
Other liabilities 664 158
Net cash provided by operating activities 23,495 6,097
Cash flows from investing activities:    
Capital expenditures (2,091) (3,952)
Acquisition of business, net of cash acquired 0 (53,248)
Purchases of marketable securities (25,057) 0
Sales and maturities of marketable securities 9,450 0
Change in restricted cash and cash equivalents (1,491) (4,489)
Purchases of restricted investments 0 (1,365)
Maturities of restricted investments 4,215 4,128
Net cash used in investing activities (14,974) (58,926)
Cash flows from financing activities:    
Net proceeds from stock option exercises and employee stock purchase plans 602 2,266
Common stock repurchases for taxes upon vesting of restricted stock (2,474) (2,010)
Proceeds from note payable 0 34,000
Payments on debt and other liabilities (567) (397)
Other 973 479
Net cash provided by (used in) financing activities (1,466) 34,338
Effect of exchange rates on cash (240) (222)
Net change in cash and cash equivalents 6,815 (18,713)
CASH AND CASH EQUIVALENTS, beginning of period 122,003 129,513
CASH AND CASH EQUIVALENTS, end of period $ 128,818 $ 110,800