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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Jan. 01, 2017
Dec. 25, 2015
Dec. 26, 2014
Cash flows from operating activities:      
Net income (loss) $ (15,251) $ 71,247 $ 65,675
Adjustments to reconcile net income (loss) to net cash from operating activities:      
Depreciation and amortization 46,692 41,843 29,474
Goodwill and intangible asset impairment charge 103,544 0 0
Provision for doubtful accounts 8,308 7,132 11,815
Stock-based compensation 9,363 11,103 11,051
Deferred income taxes (25,355) 5,176 12,663
Other operating activities 7,910 446 898
Changes in operating assets and liabilities:      
Accounts receivable 112,785 (89,474) (77,629)
Income tax receivable 9,450 (16,678) (5,696)
Other assets 470 (6,398) (7,361)
Accounts payable and other accrued expenses (4,101) 23,261 (8,683)
Accrued wages and benefits (7,313) 12,203 12,069
Workers’ compensation claims reserve 11,070 14,736 1,579
Other liabilities 4,182 (2,525) 1,670
Net cash provided by operating activities 261,754 72,072 47,525
Cash flows from investing activities:      
Capital expenditures (29,042) (18,394) (16,918)
Acquisitions of businesses (72,476) (67,500) (305,876)
Purchases of marketable securities 0 0 (25,057)
Sales and maturities of marketable securities 0 1,500 44,167
Change in restricted cash and cash equivalents (19,773) 18,374 (9,283)
Purchases of restricted investments (37,173) (51,516) (18,196)
Maturities of restricted investments 15,248 12,510 12,726
Net cash used in investing activities (143,216) (105,026) (318,437)
Cash flows from financing activities:      
Purchases and retirement of common stock (5,748) 0 0
Net proceeds from stock option exercises and employee stock purchase plans 1,542 1,563 2,191
Common stock repurchases for taxes upon vesting of restricted stock (2,851) (3,869) (3,114)
Net change in revolving credit facility (105,579) 46,091 171,994
Payments on debt (2,456) (2,078) (2,267)
Other (29) 1,079 978
Net cash provided by (used in) financing activities (115,121) 42,786 169,782
Effect of exchange rate changes on cash and cash equivalents 1,772 283 (1,207)
Net change in cash and cash equivalents 5,189 10,115 (102,337)
CASH AND CASH EQUIVALENTS, beginning of period 29,781 19,666 122,003
CASH AND CASH EQUIVALENTS, end of period 34,970 29,781 19,666
Retained earnings      
Cash flows from operating activities:      
Net income (loss) $ (15,251) $ 71,247 $ 65,675