XML 61 R49.htm IDEA: XBRL DOCUMENT v3.8.0.1
Investment Securities - Other Than Temporarily Impaired Debt Securities (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
USD ($)
security
Dec. 31, 2016
USD ($)
security
Dec. 31, 2015
USD ($)
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]      
Number of securities considered other than temporarily impaired | security 0    
Number of investment securities in unrealized loss positions | security 198 134  
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]      
Held-to-maturity, Less than 12 continuous months, Fair value $ 31,051 $ 9,130  
Held-to-maturity, Less than 12 continuous months, Unrealized loss (205) (161)  
Held-to-maturity, Greater than 12 continuous months, Fair value 60,669 0  
Held-to-maturity, Greater than 12 continuous months, Unrealized loss (414) 0  
Held-to-maturity, Total securities in a loss position, Fair value 91,720 9,130  
Held-to-maturity, Total securities in a loss position, Unrealized loss (619) (161)  
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]      
Available-for-sale, Less than 12 continuous months, Fair value 212,675 284,314  
Available-for-sale, Less than 12 continuous months, Unrealized loss (1,465) (6,197)  
Available-for-sale, Greater than 12 continuous months, Fair value 40,478 9,946  
Available-for-sale, Greater than 12 continuous months, Unrealized loss (927) (52)  
Available-for-sale, Total securities in a loss position, Fair value 253,153 294,260  
Available-for-sale, Total securities in a loss position, Unrealized loss (2,392) (6,249)  
Available-for-sale and Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract] [Abstract]      
Total temporarily impaired securities, Less than 12 continuous months, Fair value 243,726 293,444  
Total temporarily impaired securities, Less than 12 continuous months, Unrealized loss (1,670) (6,358)  
Total temporarily impaired securities, Greater than 12 continuous months, Fair value 101,147 9,946  
Total temporarily impaired securities, Greater than 12 continuous months, Unrealized loss (1,341) (52)  
Total temporarily impaired securities, Total securities in a loss position, Fair value 344,873 303,390  
Total temporarily impaired securities, Total securities in a loss position, Unrealized loss $ (3,011) (6,410)  
Number of securities in continuous loss position for more than 12 months | security 55    
Number of securities in continuous loss position for less than 12 months | security 143    
Net loss on sale of available for sale securities sold $ 231 64 $ 1
MBS pass-through securities      
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]      
Available-for-sale, Less than 12 continuous months, Fair value 32,189 161,409  
Available-for-sale, Less than 12 continuous months, Unrealized loss (121) (3,570)  
Available-for-sale, Greater than 12 continuous months, Fair value 15,325 0  
Available-for-sale, Greater than 12 continuous months, Unrealized loss (302) 0  
Available-for-sale, Total securities in a loss position, Fair value 47,514 161,409  
Available-for-sale, Total securities in a loss position, Unrealized loss $ (423) (3,570)  
Available-for-sale and Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract] [Abstract]      
Number of securities in continuous loss position for more than 12 months | security 16    
Number of securities in continuous loss position for less than 12 months | security 16    
SBA-backed securities      
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]      
Available-for-sale, Less than 12 continuous months, Fair value $ 11,028 607  
Available-for-sale, Less than 12 continuous months, Unrealized loss (53) (7)  
Available-for-sale, Greater than 12 continuous months, Fair value 165 0  
Available-for-sale, Greater than 12 continuous months, Unrealized loss (2) 0  
Available-for-sale, Total securities in a loss position, Fair value 11,193 607  
Available-for-sale, Total securities in a loss position, Unrealized loss $ (55) (7)  
Collateralized Mortgage Obligations      
Available-for-sale and Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract] [Abstract]      
Number of securities in continuous loss position for less than 12 months | security 34    
CMOs issued by FNMA      
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]      
Available-for-sale, Less than 12 continuous months, Fair value $ 26,401 9,498  
Available-for-sale, Less than 12 continuous months, Unrealized loss (171) (109)  
Available-for-sale, Greater than 12 continuous months, Fair value 5,440 0  
Available-for-sale, Greater than 12 continuous months, Unrealized loss (77) 0  
Available-for-sale, Total securities in a loss position, Fair value 31,841 9,498  
Available-for-sale, Total securities in a loss position, Unrealized loss $ (248) (109)  
Available-for-sale and Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract] [Abstract]      
Number of securities in continuous loss position for more than 12 months | security 3    
CMOs issued by FHLMC      
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]      
Available-for-sale, Less than 12 continuous months, Fair value $ 69,276 31,545  
Available-for-sale, Less than 12 continuous months, Unrealized loss (628) (731)  
Available-for-sale, Greater than 12 continuous months, Fair value 0 0  
Available-for-sale, Greater than 12 continuous months, Unrealized loss 0 0  
Available-for-sale, Total securities in a loss position, Fair value 69,276 31,545  
Available-for-sale, Total securities in a loss position, Unrealized loss $ (628) (731)  
Available-for-sale and Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract] [Abstract]      
Number of securities in continuous loss position for more than 12 months | security 4    
CMOs issued by GNMA      
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]      
Available-for-sale, Less than 12 continuous months, Fair value $ 14,230 1,583  
Available-for-sale, Less than 12 continuous months, Unrealized loss (194) (1)  
Available-for-sale, Greater than 12 continuous months, Fair value 0 0  
Available-for-sale, Greater than 12 continuous months, Unrealized loss 0 0  
Available-for-sale, Total securities in a loss position, Fair value 14,230 1,583  
Available-for-sale, Total securities in a loss position, Unrealized loss (194) (1)  
Debentures of government- sponsored agencies      
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]      
Available-for-sale, Less than 12 continuous months, Fair value 2,984 19,951  
Available-for-sale, Less than 12 continuous months, Unrealized loss (5) (38)  
Available-for-sale, Greater than 12 continuous months, Fair value 0 9,946  
Available-for-sale, Greater than 12 continuous months, Unrealized loss 0 (52)  
Available-for-sale, Total securities in a loss position, Fair value 2,984 29,897  
Available-for-sale, Total securities in a loss position, Unrealized loss $ (5) (90)  
Available-for-sale and Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract] [Abstract]      
Number of securities in continuous loss position for less than 12 months | security 5    
Obligations of state and political subdivisions      
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]      
Available-for-sale, Less than 12 continuous months, Fair value $ 52,197 59,567  
Available-for-sale, Less than 12 continuous months, Unrealized loss (288) (1,740)  
Available-for-sale, Greater than 12 continuous months, Fair value 19,548 0  
Available-for-sale, Greater than 12 continuous months, Unrealized loss (546) 0  
Available-for-sale, Total securities in a loss position, Fair value 71,745 59,567  
Available-for-sale, Total securities in a loss position, Unrealized loss $ (834) (1,740)  
Available-for-sale and Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract] [Abstract]      
Number of securities in continuous loss position for more than 12 months | security 32    
Number of securities in continuous loss position for less than 12 months | security 81    
Corporate bonds      
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]      
Available-for-sale, Less than 12 continuous months, Fair value $ 3,060 154  
Available-for-sale, Less than 12 continuous months, Unrealized loss (3) (1)  
Available-for-sale, Greater than 12 continuous months, Fair value   0  
Available-for-sale, Greater than 12 continuous months, Unrealized loss   0  
Available-for-sale, Total securities in a loss position, Fair value 3,060 154  
Available-for-sale, Total securities in a loss position, Unrealized loss $ (3) (1)  
Available-for-sale and Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract] [Abstract]      
Number of securities in continuous loss position for less than 12 months | security 5    
Privately issued CMOs      
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]      
Available-for-sale, Less than 12 continuous months, Fair value $ 1,310    
Available-for-sale, Less than 12 continuous months, Unrealized loss (2)    
Available-for-sale, Greater than 12 continuous months, Fair value 0    
Available-for-sale, Greater than 12 continuous months, Unrealized loss 0    
Available-for-sale, Total securities in a loss position, Fair value 1,310    
Available-for-sale, Total securities in a loss position, Unrealized loss $ (2)    
Available-for-sale and Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract] [Abstract]      
Number of securities in continuous loss position for less than 12 months | security 2    
MBS pass-through securities      
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]      
Held-to-maturity, Less than 12 continuous months, Fair value $ 16,337 2,250  
Held-to-maturity, Less than 12 continuous months, Unrealized loss (143) (154)  
Held-to-maturity, Greater than 12 continuous months, Fair value 46,845 0  
Held-to-maturity, Greater than 12 continuous months, Unrealized loss (371) 0  
Held-to-maturity, Total securities in a loss position, Fair value 63,182 2,250  
Held-to-maturity, Total securities in a loss position, Unrealized loss (514) (154)  
Obligations of state and political subdivisions      
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]      
Held-to-maturity, Less than 12 continuous months, Fair value 3,648 3,362  
Held-to-maturity, Less than 12 continuous months, Unrealized loss (31) (6)  
Held-to-maturity, Greater than 12 continuous months, Fair value 0 0  
Held-to-maturity, Greater than 12 continuous months, Unrealized loss 0 0  
Held-to-maturity, Total securities in a loss position, Fair value 3,648 3,362  
Held-to-maturity, Total securities in a loss position, Unrealized loss (31) (6)  
CMOs issued by FHLMC      
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]      
Held-to-maturity, Less than 12 continuous months, Fair value 11,066    
Held-to-maturity, Less than 12 continuous months, Unrealized loss (31)    
Held-to-maturity, Greater than 12 continuous months, Fair value 13,824    
Held-to-maturity, Greater than 12 continuous months, Unrealized loss (43)    
Held-to-maturity, Total securities in a loss position, Fair value 24,890    
Held-to-maturity, Total securities in a loss position, Unrealized loss (74) 0  
Corporate bonds      
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]      
Held-to-maturity, Less than 12 continuous months, Fair value   3,518  
Held-to-maturity, Less than 12 continuous months, Unrealized loss   (1)  
Held-to-maturity, Greater than 12 continuous months, Fair value   0  
Held-to-maturity, Greater than 12 continuous months, Unrealized loss   0  
Held-to-maturity, Total securities in a loss position, Fair value   3,518  
Held-to-maturity, Total securities in a loss position, Unrealized loss $ 0 $ (1)