Regulatory Matters and Significant Risks or Uncertainties - Dividend and Interest Restrictions (Details) - USD ($)		6 Months Ended
	Aug. 13, 2009	Jun. 30, 2015	Dec. 31, 2014	Jun. 19, 2014
Class of Stock [Line Items]
Preferred stock, shares outstanding (in shares)		18,856	18,856
Series A Preferred Stock [Member]
Class of Stock [Line Items]
Series A Preferred stock on which quarterly dividend suspended	$ 30,407
Preferred stock, shares outstanding (in shares)				30,407
Preferred stock dividend in arrears		$ 7,700,000