Nature of Business - Additional Information (Details) $ in Millions					1 Months Ended	3 Months Ended	12 Months Ended
	May 26, 2020 shares	Dec. 31, 2019 USD ($) shares	Jun. 12, 2019 shares	Apr. 26, 2019 USD ($) Policies director	Apr. 15, 2019 shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2019 USD ($)	Dec. 31, 2018 shares	Jun. 30, 2020 directorSeat director	Nov. 11, 2019	May 13, 2019 director	Apr. 25, 2019 director	Mar. 31, 2019	Dec. 28, 2018	Aug. 10, 2018
Investment Holdings [Line Items]
GWG common shares transferred (in shares) | shares					3,952,155
Maximum number of directors				13								9
Number of directors | director				11					9			7
Number of vacant Board of Director seats | directorSeat									2
Performance share unit agreement, cash compensation				$ 4.5
Performance share unit agreement, required employment term following closing				120 days
Indemnification agreement, number of directors | director											3
Consideration transferred							$ 79.0
Shares acquired (in shares) | shares						666,667
Right to appoint directors, ownership threshold									25.00%
Series A Preferred Stock | Ben LP
Investment Holdings [Line Items]
Member capital		$ 1,600.0				$ 1,600.0	$ 1,600.0
Ben LP
Investment Holdings [Line Items]
Percentage of Outstanding Common Units	95.60%	95.50%	90.20%			95.50%	95.50%	89.90%					88.10%	89.90%	13.90%
Shares acquired (in shares) | shares	26,009	666,667	1,000,000					40,505,279
Investment owned		$ 319.0				$ 319.0	$ 319.0
InsurTech Holdings, LLC
Investment Holdings [Line Items]
Percentage of Outstanding Common Units										100.00%