Derivative Instruments and Hedging Activities - Schedule of Effects of Derivative Instruments on Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Interest Rate Swap through 9-15-2020 [Member] | Cash Flow Hedging [Member]
Derivative Instruments and Hedging Activities [Abstract]
Notional/contract amount	$ 4,000	$ 4,000
Expiration date	Sep. 15, 2020	Sep. 15, 2020
Interest Rate Swap through 9-15-2020 [Member] | Cash Flow Hedging [Member] | Other Liabilities [Member]
Derivative Instruments and Hedging Activities [Abstract]
Fair Value	$ (62)	$ (38)
Interest Rate Swap through 6-15-2031 [Member] | Cash Flow Hedging [Member]
Derivative Instruments and Hedging Activities [Abstract]
Notional/contract amount	$ 4,000	$ 4,000
Expiration date	Jun. 15, 2031	Jun. 15, 2031
Interest Rate Swap through 6-15-2031 [Member] | Cash Flow Hedging [Member] | Other Liabilities [Member]
Derivative Instruments and Hedging Activities [Abstract]
Fair Value	$ (10)
Interest Rate Swap through 6-15-2031 [Member] | Cash Flow Hedging [Member] | Other Assets [Member]
Derivative Instruments and Hedging Activities [Abstract]
Fair Value		$ 255
Interest Rate Swap through 4-9-2025 [Member] | Fair Value Hedging [Member]
Derivative Instruments and Hedging Activities [Abstract]
Notional/contract amount	$ 1,170	$ 1,186
Expiration date	Apr. 09, 2025	Apr. 09, 2025
Interest Rate Swap through 4-9-2025 [Member] | Fair Value Hedging [Member] | Other Liabilities [Member]
Derivative Instruments and Hedging Activities [Abstract]
Fair Value	$ (16)
Interest Rate Swap through 4-9-2025 [Member] | Fair Value Hedging [Member] | Other Assets [Member]
Derivative Instruments and Hedging Activities [Abstract]
Fair Value		$ 34
Interest Rate Swap through 2-12-2022 [Member] | Fair Value Hedging [Member]
Derivative Instruments and Hedging Activities [Abstract]
Notional/contract amount	$ 4,281	$ 4,347
Expiration date	Feb. 12, 2022	Feb. 12, 2022
Interest Rate Swap through 2-12-2022 [Member] | Fair Value Hedging [Member] | Other Liabilities [Member]
Derivative Instruments and Hedging Activities [Abstract]
Fair Value	$ (19)
Interest Rate Swap through 2-12-2022 [Member] | Fair Value Hedging [Member] | Other Assets [Member]
Derivative Instruments and Hedging Activities [Abstract]
Fair Value		$ 78