INVESTMENTS (Gross Unrealized Losses and Fair Value by Length of Time of Available-For-Sale Securities) (Detail) $ in Thousands	Dec. 31, 2015 USD ($) Securities	Dec. 31, 2014 USD ($) Securities
Schedule Of Available For Sale Securities [Line Items]
Fair Value	$ 220,134	$ 253,226
Less than 12 months	1,736	122
More than 12 months	2,210	5,748
Total Unrealized Losses	$ 3,946	$ 5,870
Available-for-Sale Securities
Schedule Of Available For Sale Securities [Line Items]
Number of securities | Securities	34	37
Fair Value		$ 253,226
U.S. Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Fair Value	$ 78,555	141,679
Less than 12 months	1,020	60
More than 12 months	314	2,758
Total Unrealized Losses	$ 1,334	$ 2,818
U.S. Government Agencies | Available-for-Sale Securities
Schedule Of Available For Sale Securities [Line Items]
Number of securities | Securities	7	14
Fair Value		$ 141,679
State and municipal
Schedule Of Available For Sale Securities [Line Items]
Fair Value		1,409
Less than 12 months		4
More than 12 months		0
Total Unrealized Losses		$ 4
State and municipal | Available-for-Sale Securities
Schedule Of Available For Sale Securities [Line Items]
Number of securities | Securities		2
Fair Value		$ 1,409
Mortgage-Backed
Schedule Of Available For Sale Securities [Line Items]
Fair Value	$ 140,556	108,902
Less than 12 months	716	58
More than 12 months	1,830	2,878
Total Unrealized Losses	$ 2,546	$ 2,936
Mortgage-Backed | Available-for-Sale Securities
Schedule Of Available For Sale Securities [Line Items]
Number of securities | Securities	26	20
Fair Value		$ 108,902
Trust Preferred
Schedule Of Available For Sale Securities [Line Items]
Fair Value	$ 1,023	1,236
Less than 12 months	0	0
More than 12 months	66	112
Total Unrealized Losses	$ 66	$ 112
Trust Preferred | Available-for-Sale Securities
Schedule Of Available For Sale Securities [Line Items]
Number of securities | Securities	1	1
Fair Value		$ 1,236