Contingent Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Loss Contingencies [Line Items]
Aggregate amount of counterparty obligations	$ 7,273		$ 7,273		$ 7,237
VSC counterparty contingency expense	30	$ 73	59	$ 141
Provision for loss reimbursement on sold loans	45	$ 15	(24)	$ (466)
Reserve For Loss Reimbursement On Sold Loans	700		700		$ 700
Pending Litigation [Member]
Loss Contingencies [Line Items]
Maximum range of reasonably possible loss	$ 500		$ 500
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