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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended
Apr. 01, 2016
Apr. 03, 2015
Cash flows from operating activities:    
Net income $ 4,382 $ 3,005
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Depreciation expense 637 612
Amortization expense 275 547
Amortization of debt issuance costs 25 14
Non-cash stock compensation expense 1,912 1,825
(Reversal) provision for doubtful accounts (36) 159
(Gain) loss on foreign currency translation (250) 206
Increase in deferred tax liability 2,743 1,464
Changes in assets and liabilities, net of effects from acquisitions:    
Increase in accounts receivable and unbilled revenue (4,746) (5,136)
Increase in prepaid expenses and other assets (415) (74)
Increase (decrease) in accounts payable 2,497 (2,487)
Decrease in accrued expenses and other liabilities (6,488) (474)
Net cash provided by (used in) operating activities 536 (339)
Cash flows from investing activities:    
Purchases of property and equipment (487) (725)
Net cash used in investing activities (487) (725)
Cash flows from financing activities:    
Dividends paid (3,199)  
Repurchases of common stock (7,693) (2,718)
Net cash used in financing activities (10,892) (2,718)
Effect of exchange rate on cash (11) (6)
Net decrease in cash and cash equivalents (10,854) (3,788)
Cash and cash equivalents at beginning of period 23,503 14,608
Cash and cash equivalents at end of period 12,649 10,820
Supplemental disclosure of cash flow information:    
Cash paid for income taxes 2,399 164
Cash paid for interest $ 13 $ 122