SIGNIFICANT TRANSACTIONS - Total Intangible Assets (Details) - Individual Life Business - USD ($) $ in Thousands	Jun. 01, 2019	Sep. 30, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Other intangibles	$ 21,300
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Remainder of 2019		$ 366
2020		1,463
2021		1,463
2022		1,463
2023		1,463
Expected Amortization Expense VOBA [Abstract]
Remainder of 2019		(3,616)
2020		(19,741)
2021		(12,153)
2022		(5,090)
2023		$ 1,143
Distribution relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Other intangibles	$ 15,000
Estimated Useful Life	18 years
Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Other intangibles	$ 6,300
Estimated Useful Life	10 years