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
 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Operating Activities    
Net loss $ (1,474) $ (5,204)
Adjustments to reconcile net loss to cash provided by operating activities:    
Amortization and depreciation 2,205 2,042
Amortization of investment premiums, net 410 481
Stock-based compensation 7,078 6,128
Deferred income tax expense (benefit) 11 0
Impairment of long-lived assets 0 1,195
Changes in operating assets and liabilities:    
Accounts receivable (630) (3,297)
Inventory 269 536
Prepaid and other assets (342) (330)
Accounts payable, accrued expenses and other current liabilities 1,152 36
Accrued compensation 2,209 2,201
Deferred revenue and deferred profits (22) 307
Accrued price protection liability 495 2,797
Other long-term liabilities 280 114
Net cash provided by operating activities 11,641 7,006
Investing Activities    
Purchases of property and equipment (4,641) (1,822)
Payments to acquire intangible assets 0 655
Purchases of available-for-sale securities (29,764) (47,117)
Maturities of available-for-sale securities 28,995 45,500
Net cash used in investing activities (5,410) (4,094)
Financing Activities    
Payments on capital leases 0 (2)
Net proceeds from issuance of common stock 1,559 1,113
Minimum tax withholding paid on behalf of employees for restricted stock units (2,988) (1,123)
Net cash used in financing activities (1,429) (12)
Effect of exchange rate changes on cash and cash equivalents (4) 8
Increase in cash and cash equivalents 4,798 2,908
Cash and cash equivalents at beginning of period 26,450 21,810
Cash and cash equivalents at end of period 31,248 24,718
Supplemental Cash Flow Information [Abstract]    
Income taxes paid 75 71
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]    
Issuance of accrued share-based bonus plan 5,019 4,836
Accrued purchases of intangible assets 0 300
Accrued purchases of property and equipment $ 1,751 $ 425