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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Current assets    
Cash and cash equivalents $ 214,868 $ 457,325
Short-term investments 2,021,663 1,796,533
Prepaid expenses and other current assets 699,019 522,212
Total current assets 2,935,550 2,776,070
Restricted cash and cash equivalents 67,152 73,205
Restricted investments 880,908 1,044,855
Other investments 70,203 80,411
Property and equipment, net 313,731 298,195
Operating lease right-of-use assets 213,111 223,412
Intangible assets, net 48,418 50,765
Goodwill 180,475 180,516
Other assets 58,916 46,455
Total assets 4,768,464 4,773,884
Current liabilities    
Accounts payable 95,573 129,542
Insurance reserves 1,065,881 1,068,628
Accrued and other current liabilities 1,364,019 1,264,426
Operating lease liabilities — current 51,710 53,765
Total current liabilities 2,577,183 2,516,361
Operating lease liabilities 200,018 210,232
Long-term debt, net of current portion 787,404 655,173
Other liabilities 45,871 50,905
Total liabilities 3,610,476 3,432,671
Commitments and contingencies (Note 7)
Stockholders’ equity    
Preferred stock, $0.00001 par value; 1,000,000,000 shares authorized as of March 31, 2022 and December 31, 2021; no shares issued and outstanding as of March 31, 2022 and December 31, 2021 0 0
#REF! 3 3
Additional paid-in capital 9,721,213 9,706,293
Accumulated other comprehensive income (loss) (10,212) (2,511)
Accumulated deficit (8,553,016) (8,362,572)
Total stockholders’ equity 1,157,988 1,341,213
Total liabilities and stockholders’ equity $ 4,768,464 $ 4,773,884