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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Current assets:    
Cash and cash equivalents $ 109,924 $ 420,244
Restricted cash 862 938
Short-term investments 466,186 254,927
Accounts receivable, net 171,359 165,364
Prepaid expenses and other current assets 30,068 19,180
Total current assets 778,399 860,653
Property and equipment, net 51,919 53,359
Capitalized software development costs, net 0 2,499
Deposits and other assets 8,134 7,411
Deferred tax assets, net 17,316 9,297
Total assets 855,768 933,219
Current liabilities:    
Accounts payable and accrued expenses 33,684 30,711
Accrued compensation and employee benefits 48,045 41,498
Deferred revenue and advance payments 176,540 198,734
Total current liabilities 258,269 270,943
Deferred revenue and advance payments 6,469 6,400
Other long-term liabilities 61,262 50,146
Deferred tax liabilities 37 4
Total liabilities 326,037 327,493
Commitments and Contingencies
Stockholders’ Equity    
Preferred stock undesignated, $0.001 par value; 5,000 shares authorized; no shares issued or outstanding 0 0
Additional paid-in capital 576,957 559,918
Treasury stock, at cost; 7,285 shares and 6,405 shares, respectively (586,161) (475,184)
Accumulated other comprehensive loss (10,217) (5,659)
Retained earnings 549,134 526,633
Total stockholders’ equity 529,731 605,726
Total liabilities and stockholders’ equity 855,768 933,219
Class A    
Stockholders’ Equity    
Common stock 16 16
Total stockholders’ equity 16 16
Class B Convertible    
Stockholders’ Equity    
Common stock 2 2
Total stockholders’ equity $ 2 $ 2