CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Current Assets      
Cash and cash equivalents $ 404,507 $ 92,348 $ 67,598
Short-term investments 279,066 4,098 138,638
Investment securities, available-for sale (Amortized cost: 2021: $1,001; 2020: $0) 1,001 0  
Investment securities, held-to-maturity (Fair value: 2021: $0; 2020: $266) 0 265  
Accrued retrospective premiums 54,179 34,829 13,225
Other receivables 19,211 11,368 5,503
Reinsurance recoverable     481
Healthcare receivable 30,225 38,745 25,819
Other assets, current 21,260 8,129 1,692
Total current assets 809,449 189,782 252,956
Investment securities, available-for sale (Amortized cost: 2021: $35,281; 2020: $53,953) 34,798 53,963 56,428
Investment securities, held-to-maturity (Fair value: 2021: $703; 2020: $471) 695 429 663
Property and equipment, net 2,024 2,078 1,940
Operating lease right-of-use assets 7,102 7,882 11,097
Goodwill and other intangible assets 4,233 4,233  
Other assets, non-current 8,641 8,885 9,704
Goodwill   1,243 1,243
Other intangible assets   2,990 2,990
Total assets 866,942 267,252 337,021
Current liabilities      
Unpaid claims 117,582 103,976 77,886
Accounts payable and accrued expenses 18,320 30,671 19,826
Accrued salaries and benefits 10,852 3,978 3,792
Operating lease liabilities 4,841 4,795 4,761
Current portion of notes and securities payable 21,425 20,803 18,481
Other liabilities, current 5 5 14
Premium deficiency reserve     17,128
Total current liabilities 173,025 164,228 141,888
Notes and securities payable, net of discounts and deferred issuance costs 24,285 106,413 57,917
Derivative liabilities 0 44,810 138,561
Warrants payable 62,039 97,782 17,672
Long-term operating lease liabilities 5,391 6,349 10,044
Other liabilities, non-current 13,267 13,116 11,729
Total liabilities 278,007 432,698 377,811
Commitments and Contingencies Note 22
Convertible Preferred stock 0 447,747 447,747
Stockholders' equity      
Additional paid-in capital 1,662,873 411,872  
Accumulated other comprehensive (income) loss (483) 10 46
Accumulated deficit (1,077,399) (1,028,982) (891,633)
Clover stockholders' equity (deficit) 585,032 (617,096) (488,537)
Non-controlling interest 3,903 3,903  
Total stockholders' equity (deficit) 588,935 (613,193) (488,537)
Total liabilities, convertible preferred stock and stockholders' equity 866,942 267,252 337,021
Reverse Capitalization [Member]      
Stockholders' equity      
Common Stock, Value   9 9
Additional paid-in capital   411,867 $ 403,041
Class A Common Stock      
Stockholders' equity      
Common Stock, Value 15 0  
Class B Common Stock      
Stockholders' equity      
Common Stock, Value $ 26 $ 4