COMMITMENTS AND CONTINGENCIES (Details)	Jun. 30, 2019 USD ($) city	Dec. 31, 2018 USD ($)
Commitments and contingencies
Outstanding caims receivable	$ 20,500,000
Reinsurance receivable	102,300,000
Statutory reserve credit	$ 118,200,000
Administrative and marketing office space
Commitments and contingencies
Number of cities in which properties are leased | city	19
Building contiguous to home office
Commitments and contingencies
Approximate purchase price of property		$ 75,000,000
Minimum | Administrative and marketing office space
Commitments and contingencies
Operating lease term	1 year
Maximum | Administrative and marketing office space
Commitments and contingencies
Operating lease term	10 years
Indemnification Agreement
Commitments and contingencies
Indemnification agreement with certain officers, maximum	$ 10,000,000