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Revenue from Contracts with Customers Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Disaggregation of Revenue [Line Items] |  |  |  |
Personal trust and agency accounts | $ 1,994 | $ 1,995 | $ 6,383 | $ 5,793
Employee benefit and retirement-related accounts | 1,703 | 1,532 | 5,003 | 4,499
Investment management and investment advisory agency accounts | 2,353 | 2,077 | 6,936 | 6,188
Other | 368 | 328 | 1,157 | 991
Non-sufficient funds (NSF) fees | 1,926 | 2,100 | 5,608 | 6,100
Demand deposit account (DDA) charges | 764 | 941 | 2,503 | 2,900
Other | 171 | 175 | 498 | 511
Credit card | 598 | 537 | 1,672 | 1,445
HELOC | 128 | 123 | 345 | 348
Installment | 66 | 54 | 203 | 331
Real estate | 2,145 | 2,175 | 6,748 | 6,399
Commercial | 309 | 468 | 1,922 | 1,085
Checkcard fee income | 4,352 | 3,974 | 12,736 | 11,775
Bank owned life insurance income | 2,585 | 1,573 | 4,625 | 3,790
ATM Fees | 500 | 605 | 1,534 | 1,708
OREO valuation adjustments | (77) | (22) | (398) | (367)
Gain on sale of OREO, net | (81) | 51 | 4,093 | 204
Other components of net periodic benefit income | 1,705 | 1,448 | 5,115 | 4,344
Other | 2,881 | 3,403 | 6,330 | 5,147
Total other income | 24,064 | 23,537 | 74,209 | 63,191
Net loss on sale of investment securities (2) | 0 |  | (2,271) |
Unrealized gain loss on equity securities | (326) | 0 | 3,467 | 0
Bank Servicing [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Other | 3,200 | 3,400 | 10,900 | 9,600
Within Scope [Domain] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Other | 1,200 | 1,100 | 4,400 | 3,400
Out of Scope [Domain] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Other | 2,000 | 2,300 | 6,500 | 6,200
PNB [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Personal trust and agency accounts | 1,994 | 1,995 | 6,383 | 5,793
Employee benefit and retirement-related accounts | 1,703 | 1,532 | 5,003 | 4,499
Investment management and investment advisory agency accounts | 2,353 | 2,077 | 6,936 | 6,188
Other | 368 | 328 | 1,157 | 991
Non-sufficient funds (NSF) fees | 1,926 | 2,100 | 5,608 | 6,100
Demand deposit account (DDA) charges | 764 | 941 | 2,503 | 2,900
Other | 171 | 175 | 498 | 511
Credit card | 592 | 537 | 1,652 | 1,454
HELOC | 128 | 123 | 345 | 345
Installment | 60 | 53 | 197 | 330
Real estate | 2,145 | 2,144 | 6,748 | 6,368
Commercial | 291 | 297 | 847 | 891
Checkcard fee income | 4,352 | 3,974 | 12,736 | 11,775
Bank owned life insurance income | 960 | 1,478 | 2,822 | 3,499
ATM Fees | 500 | 605 | 1,534 | 1,708
OREO valuation adjustments | 78 | 22 | 179 | 367
Gain on sale of OREO, net | 36 | 44 | 1,442 | 192
Other components of net periodic benefit income | 1,653 | 1,403 | 4,957 | 4,209
Other | 2,685 | 1,986 | 5,637 | 4,080
Total other income | 22,559 | 21,770 | 64,544 | 61,466
Net loss on sale of investment securities (2) | 0 |  | (2,271) |
Unrealized gain loss on equity securities | (44) |  | (11) |
GFSC [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Personal trust and agency accounts | 0 | 0 | 0 | 0
Employee benefit and retirement-related accounts | 0 | 0 | 0 | 0
Investment management and investment advisory agency accounts | 0 | 0 | 0 | 0
Other | 0 | 0 | 0 | 0
Non-sufficient funds (NSF) fees | 0 | 0 | 0 | 0
Demand deposit account (DDA) charges | 0 | 0 | 0 | 0
Other | 0 | 0 | 0 | 0
Credit card | 6 | 0 | 20 | (9)
HELOC | 0 | 0 | 0 | 0
Installment | 0 | 1 | 0 | 1
Real estate | 0 | 0 | 0 | 0
Commercial | 0 | 0 | 0 | 0
Checkcard fee income | 0 | 0 | 0 | 0
Bank owned life insurance income | 0 | 0 | 0 | 0
ATM Fees | 0 | 0 | 0 | 0
OREO valuation adjustments | 0 | 0 | 0 | 0
Gain on sale of OREO, net | 0 | 0 | 0 | 0
Other components of net periodic benefit income | 18 | 16 | 56 | 48
Other | 39 | 17 | 59 | 18
Total other income | 63 | 34 | 135 | 58
Net loss on sale of investment securities (2) | 0 |  | 0 |
Unrealized gain loss on equity securities | 0 |  | 0 |
SEPH [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Personal trust and agency accounts | 0 | 0 | 0 | 0
Employee benefit and retirement-related accounts | 0 | 0 | 0 | 0
Investment management and investment advisory agency accounts | 0 | 0 | 0 | 0
Other | 0 | 0 | 0 | 0
Non-sufficient funds (NSF) fees | 0 | 0 | 0 | 0
Demand deposit account (DDA) charges | 0 | 0 | 0 | 0
Other | 0 | 0 | 0 | 0
Credit card | 0 | 0 | 0 | 0
HELOC | 0 | 0 | 0 | 3
Installment | 6 | 0 | 6 | 0
Real estate | 0 | 31 | 0 | 31
Commercial | 18 | 171 | 1,075 | 194
Checkcard fee income | 0 | 0 | 0 | 0
Bank owned life insurance income | 0 | 0 | 0 | 0
ATM Fees | 0 | 0 | 0 | 0
OREO valuation adjustments | (1) | 0 | 219 | 0
Gain on sale of OREO, net | (117) | 7 | 2,651 | 12
Other components of net periodic benefit income | 34 | 29 | 102 | 87
Other | (41) | 202 | (56) | 150
Total other income | (99) | 440 | 3,559 | 477
Net loss on sale of investment securities (2) | 0 |  | 0 |
Unrealized gain loss on equity securities | 0 |  | 0 |
All Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Personal trust and agency accounts | 0 | 0 | 0 | 0
Employee benefit and retirement-related accounts | 0 | 0 | 0 | 0
Investment management and investment advisory agency accounts | 0 | 0 | 0 | 0
Other | 0 | 0 | 0 | 0
Non-sufficient funds (NSF) fees | 0 | 0 | 0 | 0
Demand deposit account (DDA) charges | 0 | 0 | 0 | 0
Other | 0 | 0 | 0 | 0
Credit card | 0 | 0 | 0 | 0
HELOC | 0 | 0 | 0 | 0
Installment | 0 | 0 | 0 | 0
Real estate | 0 | 0 | 0 | 0
Commercial | 0 | 0 | 0 | 0
Checkcard fee income | 0 | 0 | 0 | 0
Bank owned life insurance income | 1,625 | 95 | 1,803 | 291
ATM Fees | 0 | 0 | 0 | 0
OREO valuation adjustments | 0 | 0 | 0 | 0
Gain on sale of OREO, net | 0 | 0 | 0 | 0
Other components of net periodic benefit income | 0 | 0 | 0 | 0
Other | 198 | 1,198 | 690 | 899
Total other income | 1,541 | $ 1,293 | 5,971 | $ 1,190
Net loss on sale of investment securities (2) | 0 |  | 0 |
Unrealized gain loss on equity securities | $ (282) |  | $ 3,478 |

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