Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Equity investments, at estimated fair value, pledged as collateral (in dollars)	$ 82,430	$ 61,543
Preferred shares, no par value (in dollars per share)
Preferred shares, shares authorized	50,000,000	50,000,000
Preferred shares, shares issued	14,950,000	14,950,000
Preferred shares, shares outstanding	14,950,000	14,950,000
Common shares, no par value (in dollars per share)
Common shares, shares authorized	500,000,000	500,000,000
Common shares, shares issued	100	100
Common shares, shares outstanding	100	100