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Derivative Financial Instruments (Narrative) (Details)	1 Months Ended	9 Months Ended
	Mar. 31, 2016 USD ($) contract	Sep. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)
Derivative [Line Items]
Decrease in fair value of derivatives		$ 1,400,000
Deferred tax asset on gain on derivative		387,000
Cash flow hedge ineffectiveness		0
Interest Rate Swap [Member]
Derivative [Line Items]
Interest rate swap notional amount	$ 30,000,000
Number of interest rate swap contracts | contract	4
Derivative fair value, liability		$ (383,000)
Derivative fair value, asset			$ 1,000,000
Swap Contract - 3-Year $5 million [Member]
Derivative [Line Items]
Interest rate swap notional amount	$ 5,000,000
Interest rate swap contracts term		3 years
Derivative, maturity date	Jun. 17, 2019
Swap Contract - 5-Year $5 million [Member]
Derivative [Line Items]
Interest rate swap notional amount	$ 5,000,000
Interest rate swap contracts term		5 years
Derivative, maturity date	Mar. 17, 2021
Swap Contract - 10-Year $15 million [Member]
Derivative [Line Items]
Interest rate swap notional amount	$ 15,000,000
Interest rate swap contracts term		10 years
Derivative, maturity date	Mar. 17, 2026
Swap Contract- 7 year $5 Million [Member]
Derivative [Line Items]
Interest rate swap notional amount	$ 5,000,000
Interest rate swap contracts term		7 years
Derivative, maturity date	Mar. 17, 2023

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Information on the swap contracts and the number of swaps

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Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Nominal or face amount used to calculate payment on derivative.

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Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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