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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 27, 2021 | Jun. 28, 2020
Cash flows from operating activities: |  |
Net income (loss) | $ 22,782 | $ (158,662)
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |
Depreciation and amortization | 13,979 | 16,350
Goodwill and intangible asset impairment charge | 0 | 175,189
Provision for credit losses | 2,094 | 5,923
Stock-based compensation | 6,916 | 4,345
Deferred income taxes | 652 | (27,049)
Non-cash lease expense | 7,853 | 7,454
Other operating activities | (1,473) | 2,669
Changes in operating assets and liabilities: |  |
Accounts receivable | (16,486) | 111,803
Income tax receivable | 1,103 | (7,291)
Operating lease right-of-use asset | 6,135 | 0
Other assets | (2,495) | 4,682
Accounts payable and other accrued expenses | (6,952) | (22,197)
Other accrued wages and benefits | 11,208 | (10,809)
Deferred employer payroll taxes | 2,810 | 15,730
Workers’ compensation claims reserve | (598) | (5,668)
Operating lease liabilities | (6,729) | (7,643)
Other liabilities | 6,563 | (1,344)
Net cash provided by operating activities | 47,362 | 103,482
Cash flows from investing activities: |  |
Capital expenditures | (19,868) | (11,641)
Purchases of restricted available-for-sale investments | (14) | (1,739)
Sales of restricted available-for-sale investments | 452 | 2,581
Purchases of restricted held-to-maturity investments | 0 | (11,458)
Maturities of restricted held-to-maturity investments | 15,143 | 16,190
Net cash used in investing activities | (4,287) | (6,067)
Cash flows from financing activities: |  |
Purchases and retirement of common stock | 0 | (52,346)
Net proceeds from employee stock purchase plans | 538 | 536
Common stock repurchases for taxes upon vesting of restricted stock | (2,686) | (1,956)
Net change in revolving credit facility | 0 | 7,900
Other | (188) | (1,344)
Net cash used in financing activities | (2,336) | (47,210)
Effect of exchange rate changes on cash, cash equivalents and restricted cash | 319 | (736)
Net change in cash, cash equivalents and restricted cash | 41,058 | 49,469
Cash, cash equivalents and restricted cash, beginning of period | 118,612 | 92,371
Cash, cash equivalents and restricted cash, end of period | 159,670 | 141,840
Supplemental Disclosure of Cash Flow Information [Abstract] |  |
Interest | 880 | 2,402
Income taxes | 1,943 | (3,707)
Operating lease liabilities | 8,335 | 8,841
Property and equipment purchased but not yet paid | 1,968 | 1,189
Right-of-use assets obtained in exchange for new operating lease liabilities | $ 3,162 | $ 4,841

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