Other Comprehensive Income - Changes in accumulated other comprehensive income (loss), net of tax (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Debt Securities, Available-for-sale [Abstract]
Beginning balance	$ 15,942	$ 3,842	$ 3,109	$ (7,044)
Other comprehensive income (loss) before reclassifications	(624)	1,174	13,354	13,140
Amounts reclassified from accumulated other comprehensive income (loss)	(86)	(110)	(1,231)	(1,190)
Net other comprehensive income (loss) during the period	(710)	1,064	12,123	11,950
Ending balance	15,232	4,906	15,232	4,906
Derivatives
Beginning balance	(1,274)	(75)	(150)	2,769
Other comprehensive income (loss) before reclassifications	24	11	(1,324)	(1,664)
Amounts reclassified from accumulated other comprehensive income (loss)	289	(205)	513	(1,374)
Net other comprehensive income (loss) during period	313	(194)	(811)	(3,038)
Ending balance	(961)	(269)	(961)	(269)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning balance	14,668	3,767	2,959	(4,275)
Other comprehensive income (loss) before reclassifications	(600)	1,185	12,030	11,476
Amounts reclassified from accumulated other comprehensive income (loss)	203	(315)	(718)	(2,564)
Net other comprehensive income (loss) during period	(397)	870	11,312	8,912
Ending balance	$ 14,271	$ 4,637	$ 14,271	$ 4,637

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The amount of oci before reclassification net of tax attributable to parent.

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The amount of other comprehensive income loss net of tax portion attributable to parent.

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The amount of reclassification from AOCI current period net of tax attributable to parent.

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Amount, after tax, of accumulated unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount, after tax, of accumulated gain (loss) on derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness, attributable to parent.

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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