Contingent Liabilities (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2009
Loss Contingencies [Line Items]
Loss reimbursement on sold loans	$ 0.50	$ 0.70		$ 0.06
Payment with respect to repurchase obligation			1.5
Pending Litigation [Member]
Loss Contingencies [Line Items]
Maximum range of reasonably possible loss	0.5
Accounts Receivables Due to Mepco [Member]
Loss Contingencies [Line Items]
Installment payments period for service contract, minimum	12 months
Installment payments period for service contract, maximum	24 months
Aggregate amount of counterparty obligations	7.1		7.7
VSC counterparty contingency expense	$ 0.1	$ 0.1