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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 27, 2020
Jun. 29, 2019
OPERATING ACTIVITIES:    
Net income $ 12,399 $ 10,245
Adjustments to reconcile net income to net cash used in operating activities:    
Depreciation and amortization 6,049 5,169
Facility-related liabilities (168) 50
Right-of-use asset amortization 5,894 4,848
Deferred income taxes (842) 45
Share-based compensation expenses 1,451 1,759
Accounts receivable allowances (311) (260)
Unrealized foreign currency remeasurement losses, net 34  
Changes in operating assets and liabilities:    
Accounts receivable 5,000 7,177
Unbilled services, net (13,962) (8,245)
Prepaid expenses and other current assets, and other assets (2,766) (4,506)
Forgivable loans (25,499) (14,363)
Incentive cash awards 3,028 2,415
Accounts payable, accrued expenses, and other liabilities (31,455) (44,511)
Lease liabilities (3,152) (5,932)
Net cash used in operating activities (44,300) (46,109)
INVESTING ACTIVITIES:    
Purchases of property and equipment (13,517) (3,904)
Net cash used in investing activities (13,517) (3,904)
FINANCING ACTIVITIES:    
Issuance of common stock, principally stock options exercises 569 1,526
Borrowings under revolving line of credit 77,000 50,000
Repayments under revolving line of credit (18,000) (9,000)
Tax withholding payments reimbursed by shares (390) (388)
Cash paid on dividend equivalents (40) (35)
Cash dividends paid to shareholders (3,584) (3,196)
Repurchases of common stock (3,810) (11,510)
Net cash provided by financing activities 51,745 27,397
Effect of foreign exchange rates on cash and cash equivalents (760) 176
Net decrease in cash and cash equivalents (6,832) (22,440)
Cash and cash equivalents at beginning of period 25,639 38,028
Cash and cash equivalents at end of period 18,807 15,588
Noncash investing and financing activities:    
Purchases of property and equipment not yet paid for 3,784 4,053
Purchases of property and equipment paid by a third party   62
Asset retirement obligations 155 335
Right-of-use assets obtained in exchange for lease obligations   37,284
Right-of-use assets related to the adoption of ASC 842   82,329
Lease liabilities related to the adoption of ASC 842   106,765
Supplemental cash flow information:    
Cash paid for taxes 2,057 3,583
Cash paid for interest 676 510
Cash paid for amounts included in operating lease liabilities $ 9,243 $ 8,113