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Condensed Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 6 Months Ended 7 Months Ended
Jun. 30, 2012
Jul. 02, 2011
Operating activities:    
Net income $ 1,209 $ 8,497
Adjustments to reconcile net income to net cash used in operating activities, net of effect of acquired businesses:    
Depreciation and amortization 2,821 2,673
Loss on disposal of property and equipment 1,160  
Deferred rent (1,920) (1,699)
Deferred income taxes 266 (3,415)
Share-based compensation expenses 2,479 3,197
Excess tax benefits from share-based compensation (38) (50)
Noncash interest from discount on convertible debentures   229
Changes in operating assets and liabilities:    
Accounts receivable 13,673 (3,252)
Unbilled services (16,948) (10,005)
Prepaid expenses and other assets (2,847) (5,581)
Accounts payable, accrued expenses, and other liabilities (26,862) 1,992
Net cash used in operating activities (27,007) (7,414)
Investing activities:    
Consideration relating to acquisitions, net   (844)
Purchase of property and equipment (1,504) (4,514)
Purchase of investments (9,494) (31,543)
Sale of investments 18,994 17,059
Collections on notes receivable 14 64
Net cash provided by (used in) investing activities 8,010 (19,778)
Financing activities:    
Issuance of common stock, principally stock option exercises 575 620
Payments on notes payable   (370)
Extinguishment of convertible debentures   (21,880)
Tax withholding payment reimbursed by restricted shares (732) (705)
Excess tax benefits from share-based compensation 38 50
Repurchase of common stock (5,620) (1,368)
Repurchase of treasury stock by NeuCo, Inc.   (33)
Net cash used in financing activities (5,739) (23,686)
Effect of foreign exchange rates on cash and cash equivalents (63) 534
Net decrease in cash and cash equivalents (24,799) (50,344)
Cash and cash equivalents at beginning of period 61,587 87,505
Cash and cash equivalents at end of period 36,788 37,161
Supplemental cash flow information:    
Cash paid for income taxes 8,686 7,028
Cash paid for interest $ 111 $ 393