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CONSOLIDATED BALANCE SHEETS (UNAUDITED) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
CURRENT ASSETS:    
Cash and cash equivalents $ 67,085 $ 85,923
Short-term investments 181,193 158,018
Accounts receivable 17,785 8,657
Inventory 7,852 11,018
Other current assets 6,387 3,929
Total current assets 280,302 267,545
PROPERTY AND EQUIPMENT, net of accumulated depreciation of $22,206 and $20,713 14,698 11,808
ACQUIRED TECHNOLOGY, net of accumulated amortization of $30,091 and $21,868 96,768 104,624
INVESTMENTS 7,971 1,270
OTHER ASSETS 282 277
TOTAL ASSETS 400,021 385,524
CURRENT LIABILITIES:    
Accounts payable 8,042 7,596
Accrued expenses 9,661 10,394
Deferred revenue 3,684 4,273
Other current liabilities 15 36
Total current liabilities 21,402 22,299
DEFERRED REVENUE 2,591 3,153
RETIREMENT PLAN BENEFIT LIABILITY 10,579 9,837
Total liabilities 34,572 35,289
SHAREHOLDERS’ EQUITY:    
Preferred Stock, par value $0.01 per share, 5,000,000 shares authorized, 200,000 shares of Series A Nonconvertible Preferred Stock issued and outstanding (liquidation value of $7.50 per share or $1,500) 2 2
Common Stock, par value $0.01 per share, 100,000,000 shares authorized, 46,670,763 and 46,561,437 shares issued at September 30, 2013 and December 31, 2012, respectively 467 465
Additional paid-in capital 568,896 564,883
Accumulated deficit (188,045) (204,211)
Accumulated other comprehensive loss (5,213) (5,702)
Treasury stock, at cost (401,501 and 205,902 shares at September 30, 2013 and December 31, 2012, respectively) (10,658) (5,202)
Total shareholders’ equity 365,449 350,235
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY $ 400,021 $ 385,524