Commitments and Contingencies (Details-2) (Chattel Paper Agreement [Member], USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Guarantor Obligations [Line Items]
Guarantor obligation, maximum financing receivable	$ 10,000,000
Guarantor obligation, current carrying value	4,400,000	5,400,000	4,500,000
Servicing asset, amount recognized at period end	200,000	300,000	200,000
Servicing asset, gain recognized during the year in connection with sale of new loan assets	100,000	200,000	100,000
Servicing asset, amortization	100,000
Guarantor obligation, proceeds received from financial institution for sale of loan assets	500,000	1,600,000	1,200,000
Guarantor obligation, payments to financial institution for loan assets	1,500,000	800,000	1,200,000
Guarantor Obligation, Fiscal Year Maturity [Abstract]
Guarantor obligation, 2015	906,000
Guarantor obligation, 2016	884,000
Guarantor obligation, 2017	482,000
Guarantor obligation, 2018	420,000
Guarantor obligation, 2019	$ 410,000
Minimum [Member]
Guarantor Obligations [Line Items]
Guarantor obligation, term	1 year
Maximum [Member]
Guarantor Obligations [Line Items]
Guarantor obligation, term	10 years