Common Stock Issuances (Details)				12 Months Ended
	Mar. 17, 2015 USD ($) shares	Nov. 25, 2014 USD ($) shares	Aug. 25, 2014 USD ($) closing $ / shares shares	Dec. 31, 2016 USD ($) shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($) shares
Subsidiary or Equity Method Investee [Line Items]
Common stock, shares issued				10,883,509	10,853,566
Number of shares				0	499,665	819,384
Net proceeds from issuance of common stock | $				$ 101,000	$ 4,772,000	$ 7,822,000
Private Placement [Member]
Subsidiary or Equity Method Investee [Line Items]
Number of shares authorized to sell			1,057,137
Percent of outstanding common stock			9.90%
Share price | $ / shares			$ 9.75
Number of closings | closing			2
Number of shares	237,753	819,384
Aggregate price | $	$ 2,318,092	$ 7,988,994
Dividend rate	8.00%
Rights Offering [Member]
Subsidiary or Equity Method Investee [Line Items]
Number of shares authorized to sell			256,410
Common stock, shares issued			256,167
Share price | $ / shares			$ 9.75
Net proceeds from issuance of common stock | $			$ 2,500,000