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Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
ASSETS    
Cash and cash equivalents $ 25,497 $ 28,948
Short-term investments 287 1,061
Accounts receivable, net of allowance of $5 and $51 at December 31, 2011 and 2010, respectively 6,096 4,792
Inventories 6,444 5,957
Prepaid expenses 810 681
Other current assets 605 316
Total current assets 39,739 41,755
Non-current assets:    
Property and equipment, net 2,032 2,390
Goodwill 1,316 1,316
Intangible assets, net 1,748 1,950
Restricted cash 303 305
Other assets 229 451
Total assets 45,367 48,167
LIABILITIES AND STOCKHOLDERS' EQUITY    
Accounts payable 4,680 3,230
Accrued liabilities 5,825 6,003
Deferred revenue 111 248
Debt-current 2,519 1,747
Capital lease obligations-current 0 10
Warrant liability 7,979 8,465
Total current liabilities 21,114 19,703
Non-current liabilities:    
Debt-non-current 4,697 3,131
Capital lease obligations-non-current 0 6
Other non-current liabilities 1,243 1,595
Total liabilities 27,054 24,435
Commitments and contingencies      
Stockholders' equity:    
Preferred stock, $0.001 par value 5,000 shares authorized, issuable in series; 3 shares issued and outstanding at both December 31, 2011 and 2010; aggregate liquidation preference of $9,496 at December 31, 2011 and 2010 9,496 9,496
Common stock, $0.001 par value 112,500 shares authorized; 51,211 and 47,329 shares issued and outstanding at December 31, 2011 and 2010, respectively 51 47
Additional paid-in capital 452,701 441,034
Accumulated other comprehensive income 0 108
Accumulated deficit (443,935) (426,953)
Total stockholders' equity 18,313 23,732
Total liabilities and stockholders' equity $ 45,367 $ 48,167