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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
CURRENT ASSETS:    
Cash and cash equivalents $ 177,154 $ 132,840
Short-term investments 280,103 287,446
Accounts receivable 22,768 52,355
Inventory 53,638 36,265
Other current assets 14,301 10,276
Total current assets 547,964 519,182
PROPERTY AND EQUIPMENT, net of accumulated depreciation of $38,525 and $36,368 58,428 56,450
ACQUIRED TECHNOLOGY, net of accumulated amortization of $96,461 and $91,312 126,380 131,529
OTHER INTANGIBLE ASSETS, net of accumulated amortization of $2,342 and $2,000 14,498 14,840
GOODWILL 15,535 15,535
INVESTMENTS   14,794
DEFERRED INCOME TAXES 29,944 27,022
OTHER ASSETS 2,391 604
TOTAL ASSETS 795,140 779,956
CURRENT LIABILITIES:    
Accounts payable 10,434 13,774
Accrued expenses 29,033 35,019
Deferred revenue 59,736 14,981
Other current liabilities 25 50
Total current liabilities 99,228 63,824
DEFERRED REVENUE 19,500 23,902
RETIREMENT PLAN BENEFIT LIABILITY 33,763 33,176
Total liabilities 152,491 120,902
COMMITMENTS AND CONTINGENCIES (Note 13)
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, 48,574,065 and 48,476,034 shares issued, and 47,212,428 and 47,118,171 shares outstanding, at March 31, 2018 and December 31, 2017, respectively 486 485
Additional paid-in capital 609,404 611,063
Retained earnings 84,360 99,126
Accumulated other comprehensive loss (10,968) (11,464)
Treasury stock, at cost (1,361,637 and 1,357,863 shares at March 31, 2018 and December 31, 2017, respectively) (40,635) (40,158)
Total shareholders’ equity 642,649 659,054
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY $ 795,140 $ 779,956