Derivatives (Details)	3 Months Ended
	Mar. 31, 2018 USD ($) contract	Dec. 31, 2017 USD ($)
Derivative [Line Items]
Number of Interest Rate Derivatives Held | contract	2
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net	$ 0
Designated as Hedging Instrument | Interest Rate Contract
Derivative [Line Items]
Derivative, Notional Amount	27,500,000	$ 27,500,000
Derivative Asset	$ 1,387,000	$ 1,078,000