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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Current assets:    
Cash and cash equivalents $ 375,071 $ 109,924
Restricted cash 798 862
Short-term investments 203,218 466,186
Accounts receivable, net 118,002 171,359
Prepaid expenses and other current assets 24,665 30,068
Total current assets 721,754 778,399
Property and equipment, net 51,993 51,919
Right-of-use assets 86,994 0
Deposits and other assets 7,455 8,134
Deferred tax assets, net 20,520 17,316
Total assets 888,716 855,768
Current liabilities:    
Accounts payable, accrued expenses, and operating lease liabilities 28,626 33,684
Accrued compensation and employee benefits 41,829 48,045
Deferred revenue and advance payments 160,244 176,540
Total current liabilities 230,699 258,269
Deferred revenue and advance payments 4,487 6,469
Operating lease liabilities 105,291 0
Other long-term liabilities 32,786 61,262
Deferred tax liabilities 34 37
Total liabilities 373,297 326,037
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 590,158 576,957
Treasury stock, at cost; 7,648 shares and 7,285 shares, respectively (634,405) (586,161)
Accumulated other comprehensive loss (11,674) (10,217)
Retained earnings 571,322 549,134
Total stockholders’ equity 515,419 529,731
Total liabilities and stockholders’ equity 888,716 855,768
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