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Consolidated Balance Sheets - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
CURRENT ASSETS:    
Cash and cash equivalents $ 111,726 $ 94,094
Restricted cash 1,810  
Short-term investments 7,618 7,225
Accounts receivable, net of allowance for doubtful accounts of $633 and $798 15,471 19,265
Inventories 12,070 13,242
Prepaid expenses 1,364 1,533
Other current assets 660 1,355
Total current assets 150,719 136,714
PROPERTY AND EQUIPMENT, net 20,069 20,083
INTANGIBLE ASSETS, net 11,205 12,591
GOODWILL 19,243 18,250
OTHER ASSETS 2,322 1,683
TOTAL ASSETS 203,558 189,321
CURRENT LIABILITIES:    
Accounts payable 4,422 5,087
Deferred revenue 7,911 9,735
Accrued expenses 9,618 10,412
Total current liabilities 21,951 25,234
OTHER LIABILITIES 2,289 1,768
DEFERRED INCOME TAXES 2,836 2,883
COMMITMENTS AND CONTINGENCIES (Note 7)
STOCKHOLDERS' EQUITY    
Preferred stock, par value $.000001, 25,000 shares authorized, none issued
Common stock, par value $.000001, 120,000 shares authorized, 55,723 and 55,705 shares issued and outstanding 0 0
Additional paid-in capital 347,274 345,253
Accumulated other comprehensive loss (13,138) (15,639)
Accumulated deficit (157,654) (170,178)
Total stockholders' equity 176,482 159,436
Total liabilities and stockholders' equity $ 203,558 $ 189,321