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Accumulated Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Jun. 30, 2020
Equity [Abstract] |
Summary of the components of accumulated other comprehensive income | A summary of the components of unrealized gains on AFS securities included in OCI follows for the:
| Three Months Ended June 30
| 2020 |  | 2019
| Auction Rate Money Market Preferred Stocks |  | All Other AFS Securities |  | Total |  | Auction Rate Money Market Preferred Stocks |  | All Other AFS Securities |  | Total
Unrealized gains (losses) arising during the period | $ | 253 |  |  | $ | 1,806 |  |  | $ | 2,059 |  |  | $ | 30 |  |  | $ | 4,846 |  |  | $ | 4,876 |
Tax effect | — |  |  | (379 | ) |  | (379 | ) |  | — |  |  | (1,018 | ) |  | (1,018 | )
Unrealized gains (losses), net of tax | $ | 253 |  |  | $ | 1,427 |  |  | $ | 1,680 |  |  | $ | 30 |  |  | $ | 3,828 |  |  | $ | 3,858 |
| Six Months Ended June 30
| 2020 |  | 2019
| Auction Rate Money Market Preferred Stocks |  | All Other AFS Securities |  | Total |  | Auction Rate Money Market Preferred Stocks |  | All Other AFS Securities |  | Total
Unrealized gains (losses) arising during the period | $ | (140 | ) |  | $ | 8,510 |  |  | $ | 8,370 |  |  | $ | 295 |  |  | $ | 10,535 |  |  | $ | 10,830 |
Reclassification adjustment for net (gains) losses included in net income | — |  |  | (71 | ) |  | (71 | ) |  | — |  |  | — |  |  | — |
Net unrealized gains (losses) | (140 | ) |  | 8,439 |  |  | 8,299 |  |  | 295 |  |  | 10,535 |  |  | 10,830 |
Tax effect | — |  |  | (1,772 | ) |  | (1,772 | ) |  | — |  |  | (2,213 | ) |  | (2,213 | )
Unrealized gains (losses), net of tax | $ | (140 | ) |  | $ | 6,667 |  |  | $ | 6,527 |  |  | $ | 295 |  |  | $ | 8,322 |  |  | $ | 8,617 |
The following table summarizes the changes in AOCI by component for the:
| Three Months Ended June 30
| 2020 |  | 2019
| Unrealized Gains (Losses) on AFS Securities |  | Unrealized Gains (Losses) on Derivative Instruments |  | Defined Benefit Pension Plan |  | Total |  | Unrealized Gains (Losses) on AFS Securities |  | Unrealized Gains (Losses) on Derivative Instruments |  | Defined Benefit Pension Plan |  | Total
Balance, April 1 | $ | 9,459 |  |  | $ | (54 | ) |  | $ | (2,695 | ) |  | $ | 6,710 |  |  | $ | (441 | ) |  | $ | 192 |  |  | $ | (2,741 | ) |  | $ | (2,990 | )
OCI before reclassifications | 2,059 |  |  | (29 | ) |  | — |  |  | 2,030 |  |  | 4,876 |  |  | (127 | ) |  | — |  |  | 4,749 |
Tax effect | (379 | ) |  | 6 |  |  | — |  |  | (373 | ) |  | (1,018 | ) |  | 26 |  |  | — |  |  | (992 | )
OCI, net of tax | 1,680 |  |  | (23 | ) |  | — |  |  | 1,657 |  |  | 3,858 |  |  | (101 | ) |  | — |  |  | 3,757 |
Balance, June 30 | $ | 11,139 |  |  | $ | (77 | ) |  | $ | (2,695 | ) |  | $ | 8,367 |  |  | $ | 3,417 |  |  | $ | 91 |  |  | $ | (2,741 | ) |  | $ | 767 |
| Six Months Ended June 30
| 2020 |  | 2019
| Unrealized Gains (Losses) on AFS Securities |  | Unrealized Gains (Losses) on Derivative Instruments |  | Defined Benefit Pension Plan |  | Total |  | Unrealized Gains (Losses) on AFS Securities |  | Unrealized Gains (Losses) on Derivative Instruments |  | Defined Benefit Pension Plan |  | Total
Balance, January 1 | $ | 4,612 |  |  | $ | 54 |  |  | $ | (2,695 | ) |  | $ | 1,971 |  |  | $ | (5,200 | ) |  | $ | 256 |  |  | $ | (2,741 | ) |  | $ | (7,685 | )
OCI before reclassifications | 8,370 |  |  | (165 | ) |  | — |  |  | 8,205 |  |  | 10,830 |  |  | (208 | ) |  | — |  |  | 10,622 |
Amounts reclassified from AOCI | (71 | ) |  | — |  |  | — |  |  | (71 | ) |  | — |  |  | — |  |  | — |  |  | — |
Subtotal | 8,299 |  |  | (165 | ) |  | — |  |  | 8,134 |  |  | 10,830 |  |  | (208 | ) |  | — |  |  | 10,622 |
Tax effect | (1,772 | ) |  | 34 |  |  | — |  |  | (1,738 | ) |  | (2,213 | ) |  | 43 |  |  | — |  |  | (2,170 | )
OCI, net of tax | 6,527 |  |  | (131 | ) |  | — |  |  | 6,396 |  |  | 8,617 |  |  | (165 | ) |  | — |  |  | 8,452 |
Balance, June 30 | $ | 11,139 |  |  | $ | (77 | ) |  | $ | (2,695 | ) |  | $ | 8,367 |  |  | $ | 3,417 |  |  | $ | 91 |  |  | $ | (2,741 | ) |  | $ | 767 |

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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=118930883&loc=SL7669686-108580 + Details
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