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v3.20.2

Accumulated Other Comprehensive Income - Changes in Accumulated Other Comprehensive Income After-tax By Component (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance | $ 846,436 | $ 797,835 | $ 867,185 | $ 603,804
Ending balance | 867,963 | 825,501 | 867,963 | 825,501
Net Unrealized Gain (Loss) on Available-for-Sale Debt Securities |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance | 25,538 | 2,675 | 14,977 | (9,047)
Net change | 10,984 | 12,842 | 21,545 | 24,564
Ending balance | 27,872 | 15,517 | 27,872 | 15,517
Debt Securities, Held-to-maturity, Transfer, Derivative Hedge, Gain (Loss) | (8,650) |  | (8,650) |
Unamortized Gain (Loss) on Held-to-Maturity Securities |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance | 4,778 | (233) | 4,934 | (235)
Net change | (329) | 3 | (485) | 5
Ending balance | 13,099 | (230) | 13,099 | (230)
Debt Securities, Held-to-maturity, Transfer, Derivative Hedge, Gain (Loss) | 8,650 |  | 8,650 |
Net Unrealized Loss on Cash Flow Hedges |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance | (7,219) | (952) | (2,162) | 0
Net change | (943) | (1,261) | (6,000) | (2,213)
Ending balance | (8,162) | (2,213) | (8,162) | (2,213)
Debt Securities, Held-to-maturity, Transfer, Derivative Hedge, Gain (Loss) | 0 |  | 0 |
Total |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance | 23,097 | 1,490 | 17,749 | (9,282)
Net change | 9,712 | 11,584 | 15,060 | 22,356
Ending balance | 32,809 | $ 13,074 | 32,809 | $ 13,074
Debt Securities, Held-to-maturity, Transfer, Derivative Hedge, Gain (Loss) | $ 0 |  | $ 0 |

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of gain (loss) in accumulated other comprehensive income (AOCI) of derivative hedging forecasted acquisition of investment in debt security measured at amortized cost (held-to-maturity), transferred to investment in debt security measured at fair value with changes in fair value recognized in other comprehensive income (available-for-sale) and net income (trading). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27405-111563 + Details
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