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, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Reconciliation of assets measured at fair value on recurring basis using significant unobservable inputs [Roll Forward]
Beginning balance	$ 2,932	$ 1,274	$ 2,985	$ 1,332
Settlements	(90)	(84)	(140)	(145)
Unrealized gains (losses) included in other comprehensive income (loss)	1	4	(2)	7
Balance at end of period	2,843	1,194	2,843	1,194
Corporate Debt Securities [Member]
Reconciliation of assets measured at fair value on recurring basis using significant unobservable inputs [Roll Forward]
Beginning balance	929	1,271	982	1,329
Settlements	(90)	(84)	(140)	(145)
Unrealized gains (losses) included in other comprehensive income (loss)	1	4	(2)	7
Balance at end of period	840	1,191	840	1,191
Common stocks Financial services [Member]
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)	0	0	0	0
Balance at end of period	3	3	3	3
Nonredeemable Preferred Stock [Member]
Reconciliation of assets measured at fair value on recurring basis using significant unobservable inputs [Roll Forward]
Beginning balance	2,000	0	2,000	0
Settlements	0	0	0	0
Unrealized gains (losses) included in other comprehensive income (loss)	0	0	0	0
Balance at end of period	$ 2,000	$ 0	$ 2,000	$ 0