FAIR VALUE OF FINANCIAL INSTRUMENTS (Level 3 Securities) (Details) - Recurring - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Continuing and Discontinuing Operations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 9,874	$ 15,098
Unrealized gains (losses)		348
Purchases		245
Disposals		(5,817)
Ending Balance		9,874
Continuing and Discontinuing Operations | States, municipalities and political subdivisions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	0	168
Unrealized gains (losses)		(8)
Purchases		0
Disposals		(160)
Ending Balance		0
Continuing and Discontinuing Operations | Corporate bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	8,345	9,894
Unrealized gains (losses)		(129)
Purchases		100
Disposals		(1,520)
Ending Balance		8,345
Continuing and Discontinuing Operations | Asset-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	647	449
Unrealized gains (losses)		198
Purchases		0
Disposals		0
Ending Balance		647
Continuing and Discontinuing Operations | Equities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	882	4,587
Unrealized gains (losses)		287
Purchases		145
Disposals		(4,137)
Ending Balance		882
Continuing Operations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	1,629
Unrealized gains (losses)	(268)
Purchases	150
Ending Balance	1,511	1,629
Continuing Operations | Corporate bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	100
Unrealized gains (losses)	0
Purchases	150
Ending Balance	250	100
Continuing Operations | Asset-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	647
Unrealized gains (losses)	19
Purchases	0
Ending Balance	666	647
Continuing Operations | Equities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	882
Unrealized gains (losses)	(287)
Purchases	0
Ending Balance	$ 595	$ 882