Derivatives - Narrative (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2017 USD ($) derivative_instrument	Sep. 30, 2017 USD ($) derivative_instrument
Derivative [Line Items]
Notional amount	$ 9,886,000	$ 9,886,000
Interest Rate Cap
Derivative [Line Items]
Notional amount	$ 10,000,000	$ 10,000,000
Number of positions | derivative_instrument	1	1
Premium Paid		$ 70,000
Derivative cap interest rate (as a percent)	2.00%	2.00%
Derivative Asset	$ 1,000	$ 1,000
Designated as Hedging Instrument | Interest Rate Swap One
Derivative [Line Items]
Pay Rate (as a percent)	2.59%	2.59%
Notional amount	$ 5,155,000	$ 5,155,000
Number of positions | derivative_instrument	1	1
Designated as Hedging Instrument | Interest Rate Swap Two
Derivative [Line Items]
Pay Rate (as a percent)	1.43%	1.43%
Notional amount	$ 10,000,000	$ 10,000,000
Number of positions | derivative_instrument	1	1
Designated as Hedging Instrument | Interest Rate Swap
Derivative [Line Items]
Amounts included in accumulated other comprehensive income as unrealized losses	$ 8,000	$ 8,000
Designated as Hedging Instrument | Operating Expense
Derivative [Line Items]
Hedge ineffectiveness identified	0
Not Designated as Hedging Instrument | Other Operating Income (Expense) | Interest Rate Cap
Derivative [Line Items]
Change in fair value of derivative asset	$ 0	$ 4,000
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap One
Derivative [Line Items]
Pay Rate (as a percent)	2.59%	2.59%
Notional amount	$ 5,155,000	$ 5,155,000
Derivative term		10 years
Collateral reserved for swap	$ 400,000	$ 400,000
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap Two
Derivative [Line Items]
Pay Rate (as a percent)	1.43%	1.43%
Notional amount	$ 10,000,000	$ 10,000,000
Derivative term		5 years
Collateral reserved for swap	$ 600,000	$ 600,000