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Accumulated Other Comprehensive Income (Loss) (Tables) | 3 Months Ended
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Mar. 31, 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 March 31
| 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 | $ | (37 | ) |  | $ | (8,020 | ) |  | $ | (8,057 | ) |  | $ | 355 |  |  | $ | 1,322 |  |  | $ | 1,677 |
Tax effect | — |  |  | 1,684 |  |  | 1,684 |  |  | — |  |  | (450 | ) |  | (450 | )
Unrealized gains (losses), net of tax | $ | (37 | ) |  | $ | (6,336 | ) |  | $ | (6,373 | ) |  | $ | 355 |  |  | $ | 872 |  |  | $ | 1,227 |
The following table summarizes the changes in AOCI by component for the:
| Three Months Ended March 31
| 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 | (8,057 | ) |  | 122 |  |  | — |  |  | (7,935 | ) |  | 1,677 |  |  | 17 |  |  | — |  |  | 1,694 |
Tax effect | 1,684 |  |  | (26 | ) |  | — |  |  | 1,658 |  |  | (450 | ) |  | (6 | ) |  | — |  |  | (456 | )
OCI, net of tax | (6,373 | ) |  | 96 |  |  | — |  |  | (6,277 | ) |  | 1,227 |  |  | 11 |  |  | — |  |  | 1,238 |
Adoption of ASU 2016-01 | 223 |  |  | — |  |  | — |  |  | 223 |  |  | — |  |  | — |  |  | — |  |  | — |
Balance, March 31 | $ | (5,759 | ) |  | $ | 326 |  |  | $ | (3,223 | ) |  | $ | (8,656 | ) |  | $ | 1,257 |  |  | $ | 175 |  |  | $ | (2,972 | ) |  | $ | (1,540 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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