Derivatives - Summary of Derivative Instruments (Details) - Interest rate swaps $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($) Instrument
Interest rate swap, 8/31/2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Quantity | Instrument	1
Maturity dates	Aug. 31, 2022
Notional amount	$ 16,563
Derivative asset, fair market value	$ 315
Interest rate swap, 8/31/2022 | Minimum
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedge interest rates	1.27%
Interest rate swap, 8/31/2022 | Maximum
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedge interest rates	1.29%
Interest rate swap, 9/30/2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Quantity | Instrument	1
Maturity dates	Sep. 30, 2022
Hedge interest rates	2.37%
Notional amount	$ 12,610
Derivative liability, fair market value	$ (243)
Interest rate swap, 4/30/2024
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Quantity | Instrument	4
Maturity dates	Apr. 30, 2024
Notional amount	$ 96,544
Derivative liability, fair market value	$ (909)
Interest rate swap, 4/30/2024 | Minimum
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedge interest rates	2.16%
Interest rate swap, 4/30/2024 | Maximum
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedge interest rates	2.25%
Interest rate swap, 10/31/2024
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Quantity | Instrument	2
Maturity dates	Oct. 31, 2024
Notional amount	$ 62,633
Derivative liability, fair market value	$ (1,297)
Interest rate swap, 10/31/2024 | Minimum
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedge interest rates	2.62%
Interest rate swap, 10/31/2024 | Maximum
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedge interest rates	2.69%
Interest rate swap, 10/31/2028
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Quantity | Instrument	4
Maturity dates	Oct. 31, 2028
Notional amount	$ 125,100
Derivative liability, fair market value	$ (43)
Interest rate swap, 10/31/2028 | Minimum
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedge interest rates	2.17%
Interest rate swap, 10/31/2028 | Maximum
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedge interest rates	2.18%
Interest rate swap, 9/30/2031
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Quantity | Instrument	1
Maturity dates	Sep. 30, 2031
Hedge interest rates	3.23%
Notional amount	$ 9,905
Derivative liability, fair market value	$ (231)
Interest rate swap, 7/31/2034
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Quantity | Instrument	5
Maturity dates	Jul. 31, 2034
Notional amount	$ 144,379
Derivative liability, fair market value	$ (1,223)
Interest rate swap, 7/31/2034 | Minimum
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedge interest rates	2.48%
Interest rate swap, 7/31/2034 | Maximum
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedge interest rates	3.04%
Interest rate swap, 7/31/2035
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Quantity | Instrument	5
Maturity dates	Jul. 31, 2035
Notional amount	$ 132,432
Derivative liability, fair market value	$ (1,428)
Interest rate swap, 7/31/2035 | Minimum
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedge interest rates	2.56%
Interest rate swap, 7/31/2035 | Maximum
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedge interest rates	2.95%