Commitments and Contingencies (Details-2) (Chattel Paper Agreement [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Guarantor Obligations [Line Items]
Guarantor obligation, maximum financing receivable	$ 10,000,000
Guarantor obligation, current carrying value	5,400,000	4,500,000	4,300,000
Servicing asset, amount recognized at period end	300,000	200,000	200,000
Servicing asset, gain recognized during the year in connection with sale of new loan assets	200,000	100,000	100,000
Servicing asset, amortization	100,000
Guarantor obligation, proceeds received from financial institution for sale of loan assets	1,600,000	1,200,000	1,500,000
Guarantor obligation, payments to financial institution for loan assets	800,000	1,200,000	800,000
Guarantor Obligation, Fiscal Year Maturity [Abstract]
Guarantor obligation, 2014	714,000
Guarantor obligation, 2015	1,007,000
Guarantor obligation, 2016	910,000
Guarantor obligation, 2017	506,000
Guarantor obligation, 2018	$ 449,000
Minimum [Member]
Guarantor Obligations [Line Items]
Guarantor obligation, term	1 year
Maximum [Member]
Guarantor Obligations [Line Items]
Guarantor obligation, term	10 years