DISCLOSURES ABOUT THE FAIR VALUE OF FINANCIAL INSTRUMENTS, Unobservable Input Reconciliation (Details) - Recurring [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Reconciliation of assets measured at fair value on recurring basis using significant unobservable inputs [Roll Forward]
Beginning balance	$ 565	$ 2,932	$ 623	$ 2,985
Settlements	(89)	(90)	(145)	(140)
Unrealized gains (losses) included in other comprehensive income (loss)	(2)	1	(4)	(2)
Balance at June 30, 2018	474	2,843	474	2,843
Corporate
Reconciliation of assets measured at fair value on recurring basis using significant unobservable inputs [Roll Forward]
Beginning balance	562	929	620	982
Settlements	(89)	(90)	(145)	(140)
Unrealized gains (losses) included in other comprehensive income (loss)	1	1	(1)	(2)
Balance at June 30, 2018	474	840	474	840
Financial services
Reconciliation of assets measured at fair value on recurring basis using significant unobservable inputs [Roll Forward]
Beginning balance	3	3	3	3
Settlements	0	0	0	0
Unrealized gains (losses) included in other comprehensive income (loss)	(3)	0	(3)	0
Balance at June 30, 2018	$ 0	3	$ 0	3
Non-redeemable preferred stocks
Reconciliation of assets measured at fair value on recurring basis using significant unobservable inputs [Roll Forward]
Beginning balance		2,000		2,000
Settlements		0		0
Unrealized gains (losses) included in other comprehensive income (loss)		0		0
Balance at June 30, 2018		$ 2,000		$ 2,000