SECURITIES - UNREALIZED LOSSES (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Securities with unrealized losses
Less than 12 Months, Fair Value	$ 171,726	$ 175,838
Less than 12 Months, Unrealized Loss	(2,246)	(2,953)
12 Months or More, Fair Value	13,366	13,652
12 Months or More, Unrealized Loss	(571)	(739)
Total, Fair Value	185,092	189,490
Total, Unrealized Loss	(2,817)	(3,692)
Trading Assets
Trading Assets	5,644	5,592
U.S. government agencies
Securities with unrealized losses
Less than 12 Months, Fair Value	24,754	28,202
Less than 12 Months, Unrealized Loss	(265)	(299)
Total, Fair Value	24,754	28,202
Total, Unrealized Loss	(265)	(299)
States and municipals
Securities with unrealized losses
Less than 12 Months, Fair Value	21,189	27,834
Less than 12 Months, Unrealized Loss	(381)	(716)
Total, Fair Value	21,189	27,834
Total, Unrealized Loss	(381)	(716)
Mortgage-backed - residential
Securities with unrealized losses
Less than 12 Months, Fair Value	125,783	119,802
Less than 12 Months, Unrealized Loss	(1,600)	(1,938)
12 Months or More, Fair Value	13,366	13,652
12 Months or More, Unrealized Loss	(571)	(739)
Total, Fair Value	139,149	133,454
Total, Unrealized Loss	$ (2,171)	$ (2,677)