DISCLOSURES ABOUT THE FAIR VALUE OF FINANCIAL INSTRUMENTS, Unobservable Input Reconciliation (Details) - Recurring [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Reconciliation of assets measured at fair value on recurring basis using significant unobservable inputs [Roll Forward]
Beginning balance	$ 2,985	$ 1,332
Settlements	(50)	(61)
Unrealized gains (losses) included in other comprehensive income (loss)	(3)	3
Balance at end of period	2,932	1,274
Corporate Debt Securities [Member]
Reconciliation of assets measured at fair value on recurring basis using significant unobservable inputs [Roll Forward]
Beginning balance	982	1,329
Settlements	(50)	(61)
Unrealized gains (losses) included in other comprehensive income (loss)	(3)	3
Balance at end of period	929	1,271
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
Settlements	0	0
Unrealized gains (losses) included in other comprehensive income (loss)	0	0
Balance at end of period	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
Settlements	0	0
Unrealized gains (losses) included in other comprehensive income (loss)	0	0
Balance at end of period	$ 2,000	$ 0