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Comprehensive Income - Components of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accumulated Other Comprehensive Income (AOCI)
Beginning balance			$ 274,328
Other comprehensive income (loss) before reclassification	$ (10,679)	$ (517)	(36,009)	$ (1,234)
Amounts reclassified from accumulated other comprehensive income (loss)	122	(297)	(362)	(1,807)
Net current period other comprehensive income (loss)	(10,557)	(814)	(36,371)	(3,041)
Ending balance	243,913		243,913
Unrealized gains (losses) on available for-sale securities
Accumulated Other Comprehensive Income (AOCI)
Beginning balance	(26,203)	3,136	147	7,586
Other comprehensive income (loss) before reclassification	(10,796)	183	(36,648)	(2,085)
Amounts reclassified from accumulated other comprehensive income (loss)	0	(405)	(498)	(2,587)
Net current period other comprehensive income (loss)	(10,796)	(222)	(37,146)	(4,672)
Ending balance	(36,999)	2,914	(36,999)	2,914
Defined benefit pension plan items
Accumulated Other Comprehensive Income (AOCI)
Beginning balance	(3,385)	(3,301)	(4,069)	(5,047)
Other comprehensive income (loss) before reclassification	117	(700)	639	851
Amounts reclassified from accumulated other comprehensive income (loss)	80	97	242	292
Net current period other comprehensive income (loss)	197	(603)	881	1,143
Ending balance	(3,188)	(3,904)	(3,188)	(3,904)
Investment hedge
Accumulated Other Comprehensive Income (AOCI)
Beginning balance	168	164	316	(313)
Other comprehensive income (loss) before reclassification	0	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	42	11	(106)	488
Net current period other comprehensive income (loss)	42	11	(106)	488
Ending balance	210	175	210	175
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Income (AOCI)
Beginning balance	(29,420)	(1)	(3,606)	2,226
Ending balance	$ (39,977)	$ (815)	$ (39,977)	$ (815)

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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