XML 51 R40.htm IDEA: XBRL DOCUMENT v3.19.1
Securities - General Disclosures (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Securities    
Equity securities consisting of common stock and money market mutual funds, fair value $ 6,378 $ 6,169
Unrealized losses recorded (216)  
Available for sale    
Amortized Cost 1,916,060 707,213
Gross Unrealized Gains 10,029 798
Gross Unrealized Losses (7,794) (10,326)
Fair Value 1,918,295 697,685
Held to maturity    
Amortized Cost 15,846 608,660
Gross Unrealized Gains   1,827
Gross Unrealized Losses   (7,127)
Fair Value 15,975 603,360
Available for sale, Amortized Cost    
Due in one year or less 166,786  
Due after one year through five years 517,731  
Due after five years through ten years 276,057  
Due after ten years 955,486  
Amortized Cost 1,916,060 707,213
Available for sale, Fair Value    
Due in one year or less 166,734  
Due after one year through five years 519,968  
Due after five years through ten years 277,308  
Due after ten years 954,285  
Fair Value 1,918,295 697,685
Held to maturity, Amortized Cost    
Due in one year or less 1,914  
Due after one year through five years 12,807  
Due after five years through ten years 1,125  
Amortized Cost 15,846 608,660
Held to maturity, Fair Value    
Due in one year or less 1,913  
Due after one year through five years 12,909  
Due after five years through ten years 1,153  
Fair Value 15,975 603,360
Realized gains and losses related to sales and calls of securities AFS    
Gross security gains 184  
Security gains (losses), net 184  
Available for sale, Fair Value    
Continuous unrealized losses existing for less than 12 months, gross 43,331 190,737
Continuous unrealized losses existing for greater than 12 months, gross 711,477 417,336
Total, gross 754,808 608,073
Available for sale, Unrealized Losses    
Continuous unrealized losses existing for less than 12 months, gross (57) (1,231)
Continuous unrealized losses existing greater than 12 months, gross (7,737) (9,095)
Total, gross $ (7,794) (10,326)
Held to maturity, Fair Value    
Continuous unrealized losses existing for less than 12 months, gross   98,669
Continuous unrealized losses existing for greater than 12 months, gross   299,707
Total, gross   398,376
Held to maturity, Unrealized Losses    
Continuous unrealized losses existing for less than 12 months, gross   (1,219)
Continuous unrealized losses existing for greater than 12 months, gross   (5,908)
Total, gross   (7,127)
Security portfolio evaluated for other-than-temporary impairment 1,354  
Number of securities in unrealized loss position 366  
Securities in unrealized loss position as a percentage of aggregate carrying value of investments 1.02%  
Collateral    
Realized gains and losses related to sales and calls of securities AFS    
Carrying amount of investment securities pledged as collateral $ 564,000 498,300
U.S. Treasury securities    
Available for sale    
Amortized Cost 64,506 25,824
Gross Unrealized Gains 76 1
Gross Unrealized Losses (273) (414)
Fair Value 64,309 25,411
Available for sale, Amortized Cost    
Amortized Cost 64,506 25,824
Available for sale, Fair Value    
Fair Value 64,309 25,411
Available for sale, Fair Value    
Continuous unrealized losses existing for less than 12 months, gross 7,484 995
Continuous unrealized losses existing for greater than 12 months, gross 24,505 24,343
Total, gross 31,989 25,338
Available for sale, Unrealized Losses    
Continuous unrealized losses existing for less than 12 months, gross (2) (4)
Continuous unrealized losses existing greater than 12 months, gross (271) (410)
Total, gross (273) (414)
Obligations of U.S. government corporations and agencies    
Available for sale    
Amortized Cost 323,686 53,096
Gross Unrealized Gains 2,122 7
Gross Unrealized Losses (388) (761)
Fair Value 325,420 52,342
Available for sale, Amortized Cost    
Amortized Cost 323,686 53,096
Available for sale, Fair Value    
Fair Value 325,420 52,342
Available for sale, Fair Value    
Continuous unrealized losses existing for less than 12 months, gross 750 749
Continuous unrealized losses existing for greater than 12 months, gross 50,966 50,744
Total, gross 51,716 51,493
Available for sale, Unrealized Losses    
Continuous unrealized losses existing for less than 12 months, gross (2) (3)
Continuous unrealized losses existing greater than 12 months, gross (386) (758)
Total, gross (388) (761)
Obligations of states and political subdivisions    
Available for sale    
Amortized Cost 281,473 171,131
Gross Unrealized Gains 2,357 484
Gross Unrealized Losses (352) (1,571)
Fair Value 283,478 170,044
Held to maturity    
Amortized Cost 15,846 33,947
Gross Unrealized Gains 132 68
Gross Unrealized Losses (3) (87)
Fair Value 15,975 33,928
Available for sale, Amortized Cost    
Amortized Cost 281,473 171,131
Available for sale, Fair Value    
Fair Value 283,478 170,044
Held to maturity, Amortized Cost    
Amortized Cost 15,846 33,947
Held to maturity, Fair Value    
Fair Value 15,975 33,928
Available for sale, Fair Value    
Continuous unrealized losses existing for less than 12 months, gross 11,453 49,893
Continuous unrealized losses existing for greater than 12 months, gross 63,959 77,651
Total, gross 75,412 127,544
Available for sale, Unrealized Losses    
Continuous unrealized losses existing for less than 12 months, gross (28) (460)
Continuous unrealized losses existing greater than 12 months, gross (324) (1,111)
Total, gross (352) (1,571)
Held to maturity, Fair Value    
Continuous unrealized losses existing for less than 12 months, gross   9,531
Continuous unrealized losses existing for greater than 12 months, gross 2,301 9,538
Total, gross 2,301 19,069
Held to maturity, Unrealized Losses    
Continuous unrealized losses existing for less than 12 months, gross   (33)
Continuous unrealized losses existing for greater than 12 months, gross (3) (54)
Total, gross (3) (87)
Commercial mortgage-backed securities    
Available for sale    
Amortized Cost 55,926 2,003
Gross Unrealized Gains 29  
Gross Unrealized Losses (393) (61)
Fair Value 55,562 1,942
Held to maturity    
Amortized Cost   59,054
Gross Unrealized Gains   11
Gross Unrealized Losses   (1,003)
Fair Value   58,062
Available for sale, Amortized Cost    
Amortized Cost 55,926 2,003
Available for sale, Fair Value    
Fair Value 55,562 1,942
Held to maturity, Amortized Cost    
Amortized Cost   59,054
Held to maturity, Fair Value    
Fair Value   58,062
Available for sale, Fair Value    
Continuous unrealized losses existing for greater than 12 months, gross 430 1,942
Total, gross 430 1,942
Available for sale, Unrealized Losses    
Continuous unrealized losses existing greater than 12 months, gross (393) (61)
Total, gross (393) (61)
Held to maturity, Fair Value    
Continuous unrealized losses existing for less than 12 months, gross   12,067
Continuous unrealized losses existing for greater than 12 months, gross   45,041
Total, gross   57,108
Held to maturity, Unrealized Losses    
Continuous unrealized losses existing for less than 12 months, gross   (212)
Continuous unrealized losses existing for greater than 12 months, gross   (791)
Total, gross   (1,003)
Residential mortgage-backed securities    
Available for sale    
Amortized Cost 1,051,556 322,646
Gross Unrealized Gains 4,512 245
Gross Unrealized Losses (6,307) (7,143)
Fair Value 1,049,761 315,748
Held to maturity    
Amortized Cost   515,659
Gross Unrealized Gains   1,748
Gross Unrealized Losses   (6,037)
Fair Value   511,370
Available for sale, Amortized Cost    
Amortized Cost 1,051,556 322,646
Available for sale, Fair Value    
Fair Value 1,049,761 315,748
Held to maturity, Amortized Cost    
Amortized Cost   515,659
Held to maturity, Fair Value    
Fair Value   511,370
Available for sale, Fair Value    
Continuous unrealized losses existing for less than 12 months, gross 16,083 48,387
Continuous unrealized losses existing for greater than 12 months, gross 551,248 247,573
Total, gross 567,331 295,960
Available for sale, Unrealized Losses    
Continuous unrealized losses existing for less than 12 months, gross (9) (496)
Continuous unrealized losses existing greater than 12 months, gross (6,298) (6,647)
Total, gross (6,307) (7,143)
Held to maturity, Fair Value    
Continuous unrealized losses existing for less than 12 months, gross   77,071
Continuous unrealized losses existing for greater than 12 months, gross   245,128
Total, gross   322,199
Held to maturity, Unrealized Losses    
Continuous unrealized losses existing for less than 12 months, gross   (974)
Continuous unrealized losses existing for greater than 12 months, gross   (5,063)
Total, gross   (6,037)
Corporate debt securities    
Available for sale    
Amortized Cost 138,913 132,513
Gross Unrealized Gains 933 61
Gross Unrealized Losses (81) (376)
Fair Value 139,765 132,198
Available for sale, Amortized Cost    
Amortized Cost 138,913 132,513
Available for sale, Fair Value    
Fair Value 139,765 132,198
Available for sale, Fair Value    
Continuous unrealized losses existing for less than 12 months, gross 7,561 90,713
Continuous unrealized losses existing for greater than 12 months, gross 20,369 15,083
Total, gross 27,930 105,796
Available for sale, Unrealized Losses    
Continuous unrealized losses existing for less than 12 months, gross (16) (268)
Continuous unrealized losses existing greater than 12 months, gross (65) (108)
Total, gross (81) $ (376)
Accounting Standards Update 2017-12    
Realized gains and losses related to sales and calls of securities AFS    
Transferred securities from held to maturity to available-for-sale 573,600  
Unrealized loss related to transfer of securities from held to maturity to AFS $ 4,800