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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 30, 2018
Dec. 31, 2017
Jan. 01, 2017
Cash flows from operating activities:      
Net income (loss) $ 65,754 $ 55,456 $ (15,251)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:      
Depreciation and amortization 41,049 46,115 46,692
Goodwill and intangible asset impairment charge 0 0 103,544
Provision for doubtful accounts 10,042 6,808 8,308
Stock-based compensation 13,876 7,744 9,363
Deferred income taxes (1,929) 2,440 (25,355)
Other operating activities 5,154 2,349 6,859
Changes in operating assets and liabilities, net of amounts acquired and divested:      
Accounts receivable 11,640 (28,483) 112,785
Income tax receivable (996) 14,875 9,450
Other assets (12,928) 5,289 470
Accounts payable and other accrued expenses 2,855 (10,569) (4,101)
Accrued wages and benefits (1,447) (2,888) (7,313)
Workers’ compensation claims reserve (7,877) (1,048) 11,070
Other liabilities 499 2,046 4,182
Net cash provided by operating activities 125,692 100,134 260,703
Cash flows from investing activities:      
Capital expenditures (17,054) (21,958) (29,042)
Acquisition of businesses, net of cash acquired (22,742) 0 (72,476)
Divestiture of business 10,587 0 0
Purchases of restricted investments (12,941) (50,601) (42,648)
Maturities of restricted investments 21,635 20,157 17,244
Other 0 (1,979) 2,979
Net cash used in investing activities (20,515) (54,381) (123,943)
Cash flows from financing activities:      
Purchases and retirement of common stock (34,818) (36,680) (5,748)
Net proceeds from employee stock purchase plans and stock options exercised 1,503 1,646 1,542
Common stock repurchases for taxes upon vesting of restricted stock (3,404) (3,127) (2,851)
Net change in revolving credit facility (15,900) (16,607) (105,579)
Payments on debt (22,397) (2,267) (2,456)
Payment of contingent consideration at acquisition date fair value 0 (18,300) 0
Other 0 0 (29)
Net cash used in financing activities (75,016) (75,335) (115,121)
Effect of exchange rate changes on cash, cash equivalents and restricted cash (1,542) 191 1,772
Net change in cash, cash equivalents and restricted cash 28,619 (29,391) 23,411
Cash, cash equivalents and restricted cash, beginning of period 73,831 103,222 79,811
Cash, cash equivalents and restricted cash, end of period 102,450 73,831 103,222
Interest 4,373 3,811 4,083
Income taxes 12,898 4,593 10,312
Property, plant, and equipment purchased but not yet paid 1,553 375 1,471
Divestiture non-cash consideration 798 0 0
Non-cash acquisition adjustments $ 0 $ 0 $ 3,783