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Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2020
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract] |
Activity in Accumulated Other Comprehensive Income | Activity in accumulated other comprehensive income for the year ended December 31, 2020, 2019 and 2018 was as follows:
|  | Unrealized Gains and Losses on Available-for- Sale Securities |  |  | Tax Benefit (Expense) |  |  | Total |
|  | (in thousands) |
For the year ended December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  | $ | 4,752 |  |  | $ | (1,370 | ) |  | $ | 3,382 |
Other comprehensive income (loss) before reclassification |  |  | 15,283 |  |  |  | 123 |  |  |  | 15,406 |
Reclassification from accumulated other comprehensive income |  |  | (15,712 | ) |  |  | — |  |  |  | (15,712 | )
Net current period other comprehensive income |  |  | (429 | ) |  |  | 123 |  |  |  | (306 | )
Balance at end of period |  | $ | 4,323 |  |  | $ | (1,247 | ) |  | $ | 3,076 |
For the year ended December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  | $ | (8,536 | ) |  | $ | 2,457 |  |  | $ | (6,079 | )
Other comprehensive income (loss) before reclassification |  |  | 14,583 |  |  |  | (3,827 | ) |  |  | 10,756 |
Reclassification from accumulated other comprehensive income |  |  | (1,295 | ) |  |  | — |  |  |  | (1,295 | )
Net current period other comprehensive income |  |  | 13,288 |  |  |  | (3,827 | ) |  |  | 9,461 |
Balance at end of period |  | $ | 4,752 |  |  | $ | (1,370 | ) |  | $ | 3,382 |
For the year ended December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  | $ | (3,188 | ) |  | $ | 1,319 |  |  | $ | (1,869 | )
Other comprehensive income (loss) before reclassification |  |  | (5,790 | ) |  |  | 1,684 |  |  |  | (4,106 | )
Reclassification from accumulated other comprehensive income |  |  | (87 | ) |  |  | — |  |  |  | (87 | )
Adjustments to accumulated other comprehensive income |  |  | 529 |  |  |  | (546 | ) |  |  | (17 | )
Net current period other comprehensive income |  |  | (5,348 | ) |  |  | 1,138 |  |  |  | (4,210 | )
Balance at end of period |  | $ | (8,536 | ) |  | $ | 2,457 |  |  | $ | (6,079 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: 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=121641772&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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