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Accumulated Other Comprehensive Income (Loss) (Tables) | 9 Months Ended
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Sep. 30, 2018
Equity [Abstract] |
Summary of the components of accumulated other comprehensive income | A summary of the components of unrealized holding gains on AFS securities included in OCI follows for the:
| Three Months Ended September 30
| 2018 |  | 2017
| Auction Rate Money Market Preferred Stocks |  | All Other AFS Securities |  | Total |  | Auction Rate Money Market Preferred and Preferred Stocks |  | All Other AFS Securities |  | Total
Unrealized gains (losses) arising during the period | $ | (27 | ) |  | $ | (2,486 | ) |  | $ | (2,513 | ) |  | $ | 63 |  |  | $ | (159 | ) |  | $ | (96 | )
Reclassification adjustment for net (gains) losses included in net income | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Net unrealized gains (losses) | (27 | ) |  | (2,486 | ) |  | (2,513 | ) |  | 63 |  |  | (159 | ) |  | (96 | )
Tax effect | — |  |  | 522 |  |  | 522 |  |  | — |  |  | 54 |  |  | 54 |
Unrealized gains (losses), net of tax | $ | (27 | ) |  | $ | (1,964 | ) |  | $ | (1,991 | ) |  | $ | 63 |  |  | $ | (105 | ) |  | $ | (42 | )
| Nine Months Ended September 30
| 2018 |  | 2017
| Auction Rate Money Market Preferred Stocks |  | All Other AFS Securities |  | Total |  | Auction Rate Money Market Preferred and Preferred Stocks |  | All Other AFS Securities |  | Total
Unrealized gains (losses) arising during the period | $ | 59 |  |  | $ | (12,607 | ) |  | $ | (12,548 | ) |  | $ | 604 |  |  | $ | 3,547 |  |  | $ | 4,151 |
Reclassification adjustment for net (gains) losses included in net income | — |  |  | — |  |  | $ | — |  |  | — |  |  | (142 | ) |  | $ | (142 | )
Net unrealized gains (losses) | 59 |  |  | (12,607 | ) |  | (12,548 | ) |  | 604 |  |  | 3,405 |  |  | 4,009 |
Tax effect | — |  |  | 2,648 |  |  | 2,648 |  |  | — |  |  | (1,158 | ) |  | (1,158 | )
Unrealized gains (losses), net of tax | $ | 59 |  |  | $ | (9,959 | ) |  | $ | (9,900 | ) |  | $ | 604 |  |  | $ | 2,247 |  |  | $ | 2,851 |
The following tables summarize the changes in AOCI by component for the:
| Three Months Ended September 30
| 2018 |  | 2017
| Unrealized Holding Gains (Losses) on AFS Securities |  | Unrealized Gains (Losses) on Derivative Instruments |  | Defined Benefit Pension Plan |  | Total |  | Unrealized Holding Gains (Losses) on AFS Securities |  | Unrealized Gains (Losses) on Derivative Instruments |  | Defined Benefit Pension Plan |  | Total
Balance, July 1 | $ | (7,295 | ) |  | $ | 351 |  |  | $ | (3,223 | ) |  | $ | (10,167 | ) |  | $ | 2,923 |  |  | $ | 135 |  |  | $ | (2,972 | ) |  | $ | 86 |
OCI before reclassifications | (2,513 | ) |  | 7 |  |  | — |  |  | (2,506 | ) |  | (96 | ) |  | 11 |  |  | — |  |  | (85 | )
Amounts reclassified from AOCI | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Subtotal | (2,513 | ) |  | 7 |  |  | — |  |  | (2,506 | ) |  | (96 | ) |  | 11 |  |  | — |  |  | (85 | )
Tax effect | 522 |  |  | (2 | ) |  | — |  |  | 520 |  |  | 54 |  |  | (4 | ) |  | — |  |  | 50 |
OCI, net of tax | (1,991 | ) |  | 5 |  |  | — |  |  | (1,986 | ) |  | (42 | ) |  | 7 |  |  | — |  |  | (35 | )
Balance, September 30 | $ | (9,286 | ) |  | $ | 356 |  |  | $ | (3,223 | ) |  | $ | (12,153 | ) |  | $ | 2,881 |  |  | $ | 142 |  |  | $ | (2,972 | ) |  | $ | 51 |
| Nine Months Ended September 30
| 2018 |  | 2017
| Unrealized Holding Gains (Losses) on AFS Securities |  | Unrealized Gains (Losses) on Derivative Instruments |  | Defined Benefit Pension Plan |  | Total |  | Unrealized Holding Gains (Losses) on AFS Securities |  | Unrealized Gains (Losses) on Derivative Instruments |  | Defined Benefit Pension Plan |  | Total
Balance, January 1 | $ | 391 |  |  | $ | 230 |  |  | $ | (3,223 | ) |  | $ | (2,602 | ) |  | $ | 30 |  |  | $ | 164 |  |  | $ | (2,972 | ) |  | $ | (2,778 | )
OCI before reclassifications | (12,548 | ) |  | 160 |  |  | — |  |  | (12,388 | ) |  | 4,151 |  |  | (33 | ) |  | — |  |  | 4,118 |
Amounts reclassified from AOCI | — |  |  | — |  |  | — |  |  | — |  |  | (142 | ) |  | — |  |  | — |  |  | (142 | )
Subtotal | (12,548 | ) |  | 160 |  |  | — |  |  | (12,388 | ) |  | 4,009 |  |  | (33 | ) |  | — |  |  | 3,976 |
Tax effect | 2,648 |  |  | (34 | ) |  | — |  |  | 2,614 |  |  | (1,158 | ) |  | 11 |  |  | — |  |  | (1,147 | )
OCI, net of tax | (9,900 | ) |  | 126 |  |  | — |  |  | (9,774 | ) |  | 2,851 |  |  | (22 | ) |  | — |  |  | 2,829 |
Adoption of ASU 2016-01 | 223 |  |  | — |  |  | — |  |  | 223 |  |  | — |  |  | — |  |  | — |  |  | — |
Balance, September 30 | $ | (9,286 | ) |  | $ | 356 |  |  | $ | (3,223 | ) |  | $ | (12,153 | ) |  | $ | 2,881 |  |  | $ | 142 |  |  | $ | (2,972 | ) |  | $ | 51 |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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