Net (Loss) Income Per Share - Calculation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Net (loss) income		$ (34,527)	$ 12,758	$ (400,555)	$ (10,001)
Net (loss) income attributable to common stockholders		$ (34,527)	$ 4,966	$ (400,555)	$ (10,001)
Basic weighted average number of common shares and common shares equivalents outstanding (in shares)	[1]	414,572,706	88,863,244	410,417,493	88,616,116
Diluted weighted average number of common shares and common shares equivalents outstanding (in shares)	[1]	414,572,706	248,133,335	410,417,493	88,616,116
Net (loss) income per share attributable to common stockholders - basic (in dollars per share)	[1]	$ (0.08)	$ 0.06	$ (0.98)	$ (0.11)
Net (loss) income per share attributable to common stockholders - diluted (in dollars per share)	[1]	$ (0.08)	$ 0.02	$ (0.98)	$ (0.11)

[1] Prior period results have been adjusted to reflect the exchange of Legacy Clover's common stock for Clover Class B Common Stock at an exchange ratio of approximately 2.0681 in January 2021 as a result of the Business Combination. See Note 3 (Business Combination) for additional information. Because the Corporation had a net loss during the three and nine months ended September 30, 2021, and a net loss during the nine months ended September 30, 2020, the Corporation’s potentially dilutive securities, which include stock options, restricted stock, preferred stock and warrants to purchase shares of common stock and preferred stock, have been excluded from the computation of diluted net loss per share, as the effect would be anti-dilutive.