CONSOLIDATED STATEMENTS OF INCOME (Parenthetical) - USD ($) $ in Thousands	1 Months Ended	11 Months Ended	12 Months Ended
	Jan. 31, 2015	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016
Benefits and settlement expenses, reinsurance ceded		$ 1,025,596	$ 1,242,797	$ 1,181,960
Other operating expenses, reinsurance ceded		$ 191,346	$ 222,963	$ 207,197
Predecessor
Benefits and settlement expenses, reinsurance ceded	$ 87,674
Other operating expenses, reinsurance ceded	$ 35,036