Regulatory Matters and Significant Risks or Uncertainties - Dividend and Interest Restrictions (Details) - USD ($)			3 Months Ended
	Mar. 31, 2016	Aug. 13, 2009	Mar. 31, 2016	Jun. 30, 2014	Dec. 31, 2015
Class of Stock [Line Items]
Preferred stock, shares outstanding (in shares)	14,856		14,856		18,856
Stock Repurchased and Retired During Period, Shares	4,000		4,000	11,551
Series A Preferred Stock [Member]
Class of Stock [Line Items]
Series A Preferred stock on which quarterly dividend suspended		$ 30,407
Preferred stock dividend in arrears			$ 7,500,000