Subsequent Events (Narrative) (Details) $ / shares in Units, $ in Thousands			3 Months Ended	9 Months Ended
	Oct. 04, 2017 USD ($) loan property item	Oct. 01, 2017 USD ($) $ / shares shares	Sep. 30, 2017 USD ($) $ / shares property shares	Sep. 30, 2017 USD ($) $ / shares property	May 11, 2017 property
Subsequent Event [Line Items]
Proceeds from common stock issued				$ 45,879
Issuance costs				$ 1,190
KeyBank Credit Facility [Member]
Subsequent Event [Line Items]
Number of properties in collateral pool | property			14	14	14
Maturity date of debt				Mar. 01, 2020
Subsequent Event [Member]
Subsequent Event [Line Items]
Debt refinanced	$ 14,470
Subsequent Event [Member] | Multiple Loans Western Alliance Bank [Member] | Variable Rate Debt [Member]
Subsequent Event [Line Items]
Number of loans refinanced during the period | loan	2
Subsequent Event [Member] | KeyBank Credit Facility [Member]
Subsequent Event [Line Items]
Debt refinanced	$ 10,500
Subsequent Event [Member] | Wells Fargo [Member]
Subsequent Event [Line Items]
Number of properties in collateral pool | property	3
Principal amount	$ 26,500
Debt amortization period	30 years
Maturity date of debt	Nov. 01, 2022
Number of extension options | item	2
Extension option period	1 year
Fixed rate, interest rate	4.44%
Subsequent Event [Member] | Wells Fargo [Member] | LIBOR [Member]
Subsequent Event [Line Items]
Reference rate	one-month LIBOR
Basis spread	2.39%
ATM Program [Member]
Subsequent Event [Line Items]
Issuance of common stock, shares | shares			5,950
Shares issued, price per share | $ / shares			$ 10.50	$ 10.50
Proceeds from common stock issued			$ 62
Issuance costs			$ 61
ATM Program [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Issuance of common stock, shares | shares		15,763
Shares issued, price per share | $ / shares		$ 10.46
Proceeds from common stock issued		$ 165
Issuance costs		$ 162