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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2016
Oct. 02, 2015
Cash flows from operating activities:    
Net income $ 15,316 $ 9,754
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation expense 1,875 1,926
Amortization expense 825 1,642
Amortization of debt issuance costs 84 73
Non-cash stock compensation expense 6,467 7,263
Acquisition consideration reflected as compensation expense   (3,440)
(Reversal) provision for doubtful accounts (11) 165
(Gain) loss on foreign currency translation (566) 214
Increase in deferred tax liability 2,590 4,694
Changes in assets and liabilities, net of effects from acquisitions:    
Increase in accounts receivable and unbilled revenue (5,474) (6,958)
(Increase) decrease in prepaid expenses and other assets (405) 118
Decrease in accounts payable (2,090) (1,959)
(Decrease) increase in accrued expenses and other liabilities (10) 5,459
Increase in income taxes payable 2,211 270
Net cash provided by operating activities 20,812 19,221
Cash flows from investing activities:    
Purchases of property and equipment (2,068) (2,428)
Net cash used in investing activities (2,068) (2,428)
Cash flows from financing activities:    
Proceeds from the issuance of common stock 519 573
Proceeds from borrowings 30,000 2,500
Repayment of borrowings (17,000) (11,500)
Debt issuance costs (237)  
Dividends paid (7,163) (3,067)
Repurchases of common stock (33,976) (3,598)
Net cash used in financing activities (27,857) (15,092)
Effect of exchange rate on cash (30) 29
Net (decrease) increase in cash and cash equivalents (9,143) 1,730
Cash and cash equivalents at beginning of period 23,503 14,608
Cash and cash equivalents at end of period 14,360 16,338
Supplemental disclosure of cash flow information:    
Cash paid for income taxes 4,473 260
Cash paid for interest $ 187 $ 292