Income Taxes (Narrative) (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Income Taxes [Line Items]
Statutory federal tax rate										21.00%		21.00%		35.00%
Net operating loss carryforward	[1]	$ 27				$ 50				$ 27		$ 50
Amounts of tax benefits that would affect effective tax rate if recognized		1,184				1,272				1,184		1,272		$ 1,464
Income tax accrued interest		151				136				151		136		139
Reduction of tax benefits over the next twelve months										315
Income tax expense		1,791	$ 1,787	$ 1,739	$ 1,745	$ 1,502	$ 1,481	$ 1,387	$ 1,709	$ 7,062	[2]	$ 6,079	[2]	$ 9,885	[2]
Percentage of pre-tax income tax rate										19.00%		17.00%		28.00%
Franklin Bancorp [Member]
Income Taxes [Line Items]
Net operating loss carryforward		128								$ 128
Limitations on use		$ 122								$ 122
Net operating loss carryforward expiration date										Dec. 31, 2024

[1] As of December 31, 2019, the Company had approximately $128,000 of net operating loss carry forwards as a result of the acquisition of Franklin Bancorp. The utilization of the net operating loss carry forward is subject to Section 382 of the Internal Revenue Code and limits the Company’s use to approximately $122,000 per year during the carry forward period, which expires in 2024.

[2] Presented on a tax-equivalent basis assuming a tax rate of 21% for 2019 and 2018 and 35% for 2017. The tax-equivalent adjustment was approximately $2,084,000 for 2019, $2,422,000 for 2018, and $5,691,000 for 2017.