Loans (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2014		Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 202.2		$ 56.8
Loans — related parties	4.1		4.1
Loans receivable, weighted average interest rate	3.31%		6.18%
Loans Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	198.1		52.7
Loans — related parties	4.1		4.1
Total notes receivable including notes receivable related parties	$ 202.2	[1]	$ 56.8	[1]

[1] Loans have a weighted average stated interest rate of 3.31% and 6.18% at March 31, 2014 and December 31, 2013, respectively, and maturity dates ranging from May 2014 to February 2017. Effective interest rates are higher as certain note receivables were acquired at a discount.