XML 13 R48.htm IDEA: XBRL DOCUMENT v3.2.0.727
Securities - Gross Unrealized Losses and Fair Value of Company's Investments (Detail) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]    
Fair Value less than 12 months $ 90,419 $ 34,286
Fair value more than 12 months 69,261 90,657
Total fair value 159,680 124,943
Unrealized losses less than 12 months (1,059) (225)
Unrealized losses more than 12 months (1,086) (1,560)
Total unrealized losses (2,145) (1,785)
U.S. Treasury and Federal Agencies [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Fair Value less than 12 months 4,469 2,993
Fair value more than 12 months 13,897 20,762
Total fair value 18,366 23,755
Unrealized losses less than 12 months (14) (7)
Unrealized losses more than 12 months (90) (222)
Total unrealized losses (104) (229)
State and Municipal [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Fair Value less than 12 months 38,471 10,287
Fair value more than 12 months 1,249 2,050
Total fair value 39,720 12,337
Unrealized losses less than 12 months (667) (121)
Unrealized losses more than 12 months (12) (30)
Total unrealized losses (679) (151)
Federal Agency Collateralized Mortgage Obligations [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Fair Value less than 12 months 24,435 15,013
Fair value more than 12 months 28,098 39,801
Total fair value 52,533 54,814
Unrealized losses less than 12 months (170) (88)
Unrealized losses more than 12 months (557) (957)
Total unrealized losses (727) (1,045)
Federal Agency Mortgage-backed Pools [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Fair Value less than 12 months 23,044 5,993
Fair value more than 12 months 26,017 28,044
Total fair value 49,061 34,037
Unrealized losses less than 12 months (208) (9)
Unrealized losses more than 12 months (427) (351)
Total unrealized losses $ (635) $ (360)