Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Cash Flows

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Condensed Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Operating activities:    
Net loss $ (9,623) $ (7,490)
Adjustments to reconcile net loss to net cash used in operating activities:    
Amortization of intangible assets 844 916
Depreciation and amortization of property and equipment 1,798 2,203
Loss on disposal of property and equipment 108 79
Stock-based compensation 1,472 1,169
Accretion of asset retirement obligation 0 7
Amortization of premium on marketable securities (43) 156
Changes in operating assets and liabilities:    
Accounts receivable 133 370
Inventories (384) (325)
Prepaid expenses and other current assets 1,301 (1,748)
Other assets (464) 160
Accounts payable 792 (1,386)
Accrued compensation 656 (2,399)
Other accrued liabilities (2,197) 3,646
Deferred revenues 2,120 5,235
Net cash (used in) provided by operating activities (3,487) 593
Investing activities:    
Purchase of property and equipment (48) (2,107)
Purchase of marketable securities 0 (8,926)
Proceeds from sale of marketable securities 0 5,000
Proceeds from maturities of marketable securities 2,500 6,024
Net cash provided by (used in) investing activities 2,452 (9)
Financing activities:    
Proceeds from exercises of stock options 263 94
Net cash provided by financing activities 263 94
Effect of exchange rate changes on cash and cash equivalents 0 164
Net decrease in cash and cash equivalents (772) 842
Cash and cash equivalents at the beginning of the period 32,003 25,762
Cash and cash equivalents at the end of the period $ 31,231 $ 26,604