Debt MIF Warehousing Agreement (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
Debt Instrument [Line Items]
Maximum Borrowing Availability under all Credit Lines	$ 125,000
Notes payable bank - financial service operations	73,239	$ 85,379
Warehousing Agreement - Third Amendment to Amended and Restated [Member]
Debt Instrument [Line Items]
Maximum Borrowing Capacity under MIF Warehousing Line	110,000
Optional increase in borrowing availability	20,000
Aggreate Maximum Principal Amount Permitted to be Outstanding Under All Warehousing Credit Lines	$ 150,000
LIBOR basis points	250
Debt Instrument, Basis Spread on Variable Rate	2.80%
Repurchase Agreement [Member]
Debt Instrument [Line Items]
Maximum Borrowing Capacity under MIF Warehousing Line	$ 15,000
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