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Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Disaggregation of Revenue [Line Items] |  |  |  |
Personal trust and agency accounts | $ 2,263 | $ 2,012 | $ 4,389 | $ 3,798
Employee benefit and retirement-related accounts | 1,657 | 1,517 | 3,300 | 2,967
Investment management and investment advisory agency accounts | 2,339 | 2,143 | 4,583 | 4,111
Other | 407 | 353 | 789 | 663
Non-sufficient funds (NSF) fees | 1,848 | 2,015 | 3,682 | 4,000
Demand deposit account (DDA) charges | 813 | 974 | 1,739 | 1,959
Other | 165 | 167 | 327 | 336
Credit card | 563 | 488 | 1,074 | 908
HELOC | 118 | 134 | 217 | 225
Installment | 73 | 119 | 137 | 277
Real estate | 2,357 | 2,412 | 4,603 | 4,224
Commercial | 361 | 294 | 1,613 | 617
Checkcard fee income | 4,382 | 4,040 | 8,384 | 7,801
Bank owned life insurance income | 1,031 | 1,114 | 2,040 | 2,217
ATM Fees | 510 | 561 | 1,034 | 1,103
OREO valuation adjustments | (114) | (272) | (321) | (345)
Gain on sale of OREO, net | (147) | 53 | 4,174 | 153
Other components of net periodic benefit income | 1,705 | 1,448 | 3,410 | 2,896
Other | 2,607 | 1,127 | 3,449 | 1,744
Total other income | 23,242 | 20,699 | 50,145 | 39,654
Net loss on sale of investment securities (2) | 0 |  | (2,271) |
Unrealized gain loss on equity securities | 304 | 0 | 3,793 | 0
Bank Servicing [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Other | 3,500 | 3,500 | 7,600 | 6,300
Within Scope [Domain] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Other | 2,400 | 2,500 | 5,500 | 4,400
Out of Scope [Domain] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Other | 1,100 | 1,000 | 2,100 | 1,900
PNB [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Personal trust and agency accounts | 2,263 | 2,012 | 4,389 | 3,798
Employee benefit and retirement-related accounts | 1,657 | 1,517 | 3,300 | 2,967
Investment management and investment advisory agency accounts | 2,339 | 2,143 | 4,583 | 4,111
Other | 407 | 353 | 789 | 663
Non-sufficient funds (NSF) fees | 1,848 | 2,015 | 3,682 | 4,000
Demand deposit account (DDA) charges | 813 | 974 | 1,739 | 1,959
Other | 165 | 167 | 327 | 336
Credit card | 556 | 497 | 1,060 | 917
HELOC | 118 | 131 | 217 | 222
Installment | 73 | 119 | 137 | 277
Real estate | 2,357 | 2,412 | 4,603 | 4,224
Commercial | 314 | 271 | 556 | 594
Checkcard fee income | 4,382 | 4,040 | 8,384 | 7,801
Bank owned life insurance income | 940 | 1,014 | 1,862 | 2,021
ATM Fees | 510 | 561 | 1,034 | 1,103
OREO valuation adjustments | 71 | 272 | 101 | 345
Gain on sale of OREO, net | (179) | 48 | 1,406 | 148
Other components of net periodic benefit income | 1,652 | 1,403 | 3,304 | 2,806
Other | 1,920 | 1,177 | 2,952 | 2,094
Total other income | 22,070 | 20,582 | 41,985 | 39,696
Net loss on sale of investment securities (2) | 0 |  | (2,271) |
Unrealized gain loss on equity securities | 6 |  | 33 |
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 | 7 | (9) | 14 | (9)
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 | 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 | 19 | 16 | 38 | 32
Other | 16 | 1 | 20 | 1
Total other income | 42 | 8 | 72 | 24
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 | 3 | 0 | 3
Installment | 0 | 0 | 0 | 0
Real estate | 0 | 0 | 0 | 0
Commercial | 47 | 23 | 1,057 | 23
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 | 43 | 0 | 220 | 0
Gain on sale of OREO, net | 32 | 5 | 2,768 | 5
Other components of net periodic benefit income | 34 | 29 | 68 | 58
Other | 1 | (52) | (15) | (52)
Total other income | 71 | 8 | 3,658 | 37
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 | 91 | 100 | 178 | 196
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 | 670 | 1 | 492 | (299)
Total other income | 1,059 | $ 101 | 4,430 | $ (103)
Net loss on sale of investment securities (2) | 0 |  | 0 |
Unrealized gain loss on equity securities | $ 298 |  | $ 3,760 |

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