Quarterly report pursuant to Section 13 or 15(d)

SECURITIES (Schedule of Gross Unrealized Losses and Fair Value of Investments) (Details)

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SECURITIES (Schedule of Gross Unrealized Losses and Fair Value of Investments) (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Less than 12 months, Fair Value $ 79,085 $ 331,384
Less than 12 months, Unrealized Losses (597) (3,263)
More than 12 Months, Fair Value 79,721 46,168
Less than 12 months, Unrealized Losses (1,746) (1,382)
Total, Fair Value 158,806 377,552
Total, Unrealized Losses (2,343) (4,645)
Obligations of States and Political Subdivisions [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Less than 12 months, Fair Value 0 8,114
Less than 12 months, Unrealized Losses 0 (70)
More than 12 Months, Fair Value 631 4,950
Less than 12 months, Unrealized Losses (30) (70)
Total, Fair Value 631 13,064
Total, Unrealized Losses (30) (140)
Mortgage-Backed Securities [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Less than 12 months, Fair Value 67,843 287,113
Less than 12 months, Unrealized Losses (266) (2,442)
More than 12 Months, Fair Value 42,840 21,660
Less than 12 months, Unrealized Losses (363) (337)
Total, Fair Value 110,683 308,773
Total, Unrealized Losses (629) (2,779)
Corporate Bonds and Other Securities [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Less than 12 months, Fair Value 11,242 36,157
Less than 12 months, Unrealized Losses (331) (751)
More than 12 Months, Fair Value 36,250 19,558
Less than 12 months, Unrealized Losses (1,353) (975)
Total, Fair Value 47,492 55,715
Total, Unrealized Losses $ (1,684) $ (1,726)