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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 6 Months Ended
Jul. 02, 2016
Jul. 04, 2015
Operating activities:    
Net income $ 9,006 $ 6,101
Adjustments to reconcile net income to net cash used in operating activities:    
Depreciation and amortization 3,964 3,231
Loss on disposal of property and equipment   16
GNU gain on sale of business assets (3,836)  
Deferred rent 3,154 3,564
Deferred income taxes 731 31
Share-based compensation expenses 3,105 2,998
Excess tax benefits from share-based compensation (55) (87)
GNU gain on extinguishment of debt   (606)
Accounts receivable allowances (425) 530
Changes in operating assets and liabilities:    
Accounts receivable (3,855) (694)
Unbilled services (5,138) (4,534)
Prepaid expenses and other current asset, and other assets 542 (2,411)
Forgivable loans 3,613 887
Accounts payable, accrued expenses, and other liabilities (15,881) (25,590)
Net cash used in operating activities (5,075) (16,564)
Investing activities:    
Purchases of property and equipment (6,750) (8,492)
GNU cash proceeds from sale of business assets 1,100  
Collections on notes receivable   1,560
Payments on notes receivable   (40)
Net cash used in investing activities (5,650) (6,972)
Financing activities:    
Issuance of common stock, principally stock option exercises   105
Payments on notes payable (75) (300)
Borrowings under line of credit 5,000 4,000
Repayments under line of credit (5,000) (4,000)
Tax withholding payments reimbursed by restricted shares (490) (111)
Excess tax benefits from share-based compensation 55 87
Repurchases of common stock (15,140) (7,968)
Net cash used in financing activities (15,650) (8,187)
Effect of foreign exchange rates on cash and cash equivalents 441 (660)
Net decrease in cash and cash equivalents (25,934) (32,383)
Cash and cash equivalents at beginning of period 38,139 48,199
Cash and cash equivalents at end of period 12,205 15,816
Noncash investing and financing activities:    
Issuance of common stock for acquired business 44 42
Repurchases of common stock payable 1,315  
Purchases of property and equipment not yet paid for 3,338 2,998
Asset retirement obligations 1,522  
Supplemental cash flow information:    
Cash paid for income taxes 1,592 5,000
Cash paid for interest $ 246 $ 162