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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Dec. 28, 2012
Dec. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net income $ 6,108 $ 22,042
Adjustments to reconcile net income to net cash from operating activities:    
Accretion of common stock warrant liability 2,026 (1,458)
Accretion of Class B conversion liability   (13,620)
Accretion of asset retirement obligations 21 19
Depreciation and amortization 3,464 2,683
Accretion of contingent consideration (172) 169
Amortization of acquired unfavorable lease (189) (61)
Deferred income taxes   (1,833)
Loss on disposal of property and equipment   3
Share-based and other noncash incentive compensation 1,263 533
Change in operating assets and liabilities:    
Payment of contingent consideration (5,328)  
Accounts receivable 2,042 4,594
Inventories (1,170) (217)
Prepaid expenses and other assets 817 35
Accounts payable (2,522) (2,479)
Accrued and other liabilities (65) 3,186
Income taxes 2,672 (1,523)
Deferred revenue 75 (3,817)
Net cash from operating activities 9,042 8,256
CASH FLOWS FROM INVESTING ACTIVITIES-    
Purchases of property and equipment (1,580) (4,503)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Financing and offering costs (126) (1,334)
Proceeds from stock option exercises and employee stock purchases 845 21
Excess tax benefits 621  
Repurchase of common stock (77)  
Payments of contingent consideration (675) (15,000)
Payments to Mimix Holdings, Inc. preferred and common stockholders (4)  
Net cash from financing activities 584 (16,313)
NET CHANGE IN CASH AND CASH EQUIVALENTS 8,046 (12,560)
CASH AND CASH EQUIVALENTS - Beginning of period 84,528 45,668
CASH AND CASH EQUIVALENTS - End of period 92,574 33,108
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:    
Cash paid for interest 111  
Income taxes (refunded) paid, net $ (25) $ 4,613