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Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
CURRENT ASSETS:    
Cash $ 75,832 $ 93,191
Short-term investments 4,437  
Accounts receivable, net of allowance for doubtful accounts of $276 and $299 14,152 12,957
Inventories 13,229 11,444
Prepaid expenses 1,458 1,712
Deferred income taxes 70 71
Other current assets 6,627 200
Total current assets 115,805 119,575
PROPERTY AND EQUIPMENT, net 18,471 17,933
INTANGIBLE ASSETS, net 20,443 22,226
GOODWILL 23,674 23,782
OTHER ASSETS 1,172 729
TOTAL ASSETS 179,565 184,245
CURRENT LIABILITIES:    
Accounts payable 4,647 4,834
Deferred revenue 694 1,119
Accrued expenses 9,366 13,032
Total current liabilities 14,707 18,985
OTHER LIABILITIES 1,157 677
DEFERRED INCOME TAXES 3,381 3,437
COMMITMENTS AND CONTINGENCIES (Note 6)      
STOCKHOLDERS' EQUITY    
Preferred stock, par value $.000001, 25,000 shares authorized, none issued      
Common stock, par value $.000001, 120,000 shares authorized, 55,984 and 55,632 shares issued and outstanding      
Additional paid-in capital 341,106 338,674
Accumulated other comprehensive loss (3,953) (3,797)
Accumulated deficit (176,833) (173,731)
Total stockholders' equity 160,320 161,146
Total liabilities and stockholders' equity $ 179,565 $ 184,245