Quarterly report pursuant to Section 13 or 15(d)

UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

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UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Operating Activities    
Net loss $ (4,679) $ (10,086)
Adjustments to reconcile net loss to cash provided by operating activities:    
Amortization and depreciation 3,527 2,916
Amortization of investment premiums, net 578 741
Stock-based compensation 11,080 9,591
Deferred income tax expense (benefit) 11 0
Impairment of long-lived assets 8 1,229
Changes in operating assets and liabilities:    
Accounts receivable (397) (4,316)
Inventory 456 216
Prepaid and other assets (402) (144)
Accounts payable, accrued expenses and other current liabilities 66 (649)
Accrued compensation 3,670 5,001
Deferred revenue and deferred profits 2,234 758
Accrued price protection liability 1,468 4,617
Other long-term liabilities 382 193
Net cash provided by operating activities 18,002 10,067
Investing Activities    
Purchases of property and equipment (7,767) (2,633)
Payments to acquire intangible assets 0 955
Purchases of available-for-sale securities (36,457) (56,800)
Maturities of available-for-sale securities 35,895 55,000
Net cash used in investing activities (8,329) (5,388)
Financing Activities    
Payments on capital leases 0 (2)
Net proceeds from issuance of common stock 1,584 1,246
Minimum tax withholding paid on behalf of employees for restricted stock units (3,641) (1,246)
Net cash used in financing activities (2,057) (2)
Effect of exchange rate changes on cash and cash equivalents (11) 13
Increase in cash and cash equivalents 7,605 4,690
Cash and cash equivalents at beginning of period 26,450 21,810
Cash and cash equivalents at end of period 34,055 26,500
Supplemental Cash Flow Information [Abstract]    
Cash paid for income taxes 133 126
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]    
Issuance of accrued share-based bonus plan 5,050 4,836
Accrued purchases of property and equipment $ 146 $ 192