Debt MIF Warehousing Agreement (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Maximum Borrowing Availability under all Credit Lines	$ 125,000,000
Notes payable bank - financial service operations	71,723,000	85,379,000
Warehousing Agreement - First Amendment to Amended and Restated [Member]
Debt Instrument [Line Items]
Maximum Borrowing Capacity under MIF Warehousing Line	110,000,000
Optional increase in borrowing availability	20,000,000
Aggreate Maximum Principal Amount Permitted to be Outstanding Under All Warehousing Credit Lines	150,000,000
Minimum Net Worth Required for Compliance	11,000,000
Minimum required liquidity for compliance	5,500,000
LIBOR basis points	275
Debt Instrument, Basis Spread on Variable Rate	3.00%
Repurchase Agreement [Member]
Debt Instrument [Line Items]
Maximum Borrowing Capacity under MIF Warehousing Line	$ 15,000,000
Minimum [Member] | Repurchase Agreement [Member]
Debt Instrument [Line Items]
LIBOR basis points	275
Maximum [Member] | Repurchase Agreement [Member]
Debt Instrument [Line Items]
LIBOR basis points	300