FAIR VALUE - Reconciliation Of Gains and Losses on Level 3 Assets - (Details) - Significant Unobservable Inputs (Level 3) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
State and municipal | Recurring basis
Reconciliation and income statement classification of gains and losses
Balance at the beginning of the period	$ 10,120	$ 10,858
Included in other comprehensive income	(3)	1
Settlements	(443)	(430)
Balance at the end of the period	9,674	10,429
Other securities
Reconciliation and income statement classification of gains and losses
Balance at the beginning of the period		6,524
Included in other comprehensive income		(1)
Balance at the end of the period		$ 6,523
Other securities | Recurring basis
Reconciliation and income statement classification of gains and losses
Balance at the beginning of the period	6,598
Included in other comprehensive income	5
Balance at the end of the period	$ 6,603