Comprehensive Income - Components of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Accumulated Other Comprehensive Income (AOCI)
Beginning balance	$ 211,153	$ 211,936	$ 180,872	$ 176,773	$ 211,936	$ 176,773
Total other comprehensive (loss) income	45	(917)	3,375	917	(872)	4,292
Ending balance	228,500	211,153	200,676	180,872	228,500	200,676
Unrealized gains (losses) on available for-sale securities
Accumulated Other Comprehensive Income (AOCI)
Beginning balance	3,773	2,942	(1,941)	(3,384)	2,942	(3,384)
Other comprehensive income (loss) before reclassification	402		3,424		1,434	4,781
Amounts reclassified from AOCI	(404)		37		(605)	123
Total other comprehensive (loss) income	(2)		3,461		829	4,904
Stranded AOCI						0
Ending balance	3,771	3,773	1,520	(1,941)	3,771	1,520
Defined benefit pension plan items
Accumulated Other Comprehensive Income (AOCI)
Beginning balance	(4,734)	(4,295)	(3,614)	(3,422)	(4,295)	(3,422)
Other comprehensive income (loss) before reclassification	(731)		(378)		(1,246)	(619)
Amounts reclassified from AOCI	77		50		153	99
Total other comprehensive (loss) income	(654)		(328)		(1,093)	(520)
Stranded AOCI						0
Ending balance	(5,388)	(4,734)	(3,942)	(3,614)	(5,388)	(3,942)
Investment Hedge
Accumulated Other Comprehensive Income (AOCI)
Beginning balance	(1,277)	32	(334)	0	32	0
Other comprehensive income (loss) before reclassification	0		0		0	0
Amounts reclassified from AOCI	701		242		(608)	(92)
Total other comprehensive (loss) income	701		242		(608)	(92)
Stranded AOCI						0
Ending balance	(576)	(1,277)	(92)	(334)	(576)	(92)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (AOCI)
Beginning balance	(2,238)	(1,321)	(5,889)	(6,806)	(1,321)	(6,806)
Other comprehensive income (loss) before reclassification	(329)		3,046		188	4,162
Amounts reclassified from AOCI	374		329		(1,060)	130
Total other comprehensive (loss) income	45	(917)	3,375	917	(872)	4,292
Stranded AOCI						0
Ending balance	$ (2,193)	$ (2,238)	$ (2,514)	$ (5,889)	$ (2,193)	$ (2,514)

Tax Cuts And Jobs Act, Reclassification From AOCI To Retained Earnings, Tax Effect

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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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