CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 404,507	$ 92,348
Short-term investments	279,066	4,098
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
Other receivables	19,211	11,368
Healthcare receivable	30,225	38,745
Other assets, current	21,260	8,129
Total current assets	809,449	189,782
Investment securities, available-for sale (Amortized cost: 2021: $35,281; 2020: $53,953)	34,798	53,963
Investment securities, held-to-maturity (Fair value: 2021: $703; 2020: $471)	695	429
Property and equipment, net	2,024	2,078
Operating lease right-of-use assets	7,102	7,882
Goodwill and other intangible assets	4,233	4,233
Other assets, non-current	8,641	8,885
Total assets	866,942	267,252
Current liabilities
Unpaid claims	117,582	103,976
Accounts payable and accrued expenses	18,320	30,671
Accrued salaries and benefits	10,852	3,978
Operating lease liabilities	4,841	4,795
Current portion of notes and securities payable	21,425	20,803
Other liabilities, current	5	5
Total current liabilities	173,025	164,228
Notes and securities payable, net of discounts and deferred issuance costs	24,285	106,413
Derivative liabilities	0	44,810
Warrants payable	62,039	97,782
Long-term operating lease liabilities	5,391	6,349
Other liabilities, non-current	13,267	13,116
Total liabilities	278,007	432,698
Commitments and Contingencies (Note 18)
Convertible Preferred stock (Series Seed A, A-1, B, C, and D), $0.0001 par value; 0 and 155,387,025 shares authorized as of March 31, 2021 and December 31, 2020, respectively; 0 and 139,444,346 shares issued and outstanding as of March 31, 2021 and December 31, 2020, respectively; aggregate liquidation preference of $0 and $470,256 as of March 31, 2021 and December 31, 2020 (1)	0	447,747
Stockholders' deficit
Additional paid-in capital	1,662,873	411,872
Accumulated other comprehensive (income) loss	(483)	10
Accumulated deficit	(1,077,399)	(1,028,982)
Clover shareholders' equity (deficit)	585,032	(617,096)
Non-controlling interest	3,903	3,903
Total stockholders' equity (deficit)	588,935	(613,193)
Total liabilities, convertible preferred stock and stockholders' equity	866,942	267,252
Class A Common Stock
Stockholders' deficit
Common stock, value	15	0
Class B Common Stock
Stockholders' deficit
Common stock, value	$ 26	$ 4