Debt MIF Warehousing Agreement (Details) (USD $)			3 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 MIF Amended and Restated [Member]
Debt Instrument [Line Items]
Maximum Borrowing Capacity under Warehousing Line excluding Accordion			$ 80,000,000
Optional increase in borrowing availability for MIF			20,000,000
Maximum Borrowing Capacity under MIF Warehousing Line			100,000,000
Aggreate Maximum Principal Amount Permitted to be Outstanding Under All Warehousing Credit Lines			125,000,000
LIBOR basis points			275
Debt Instrument, Basis Spread on Variable Rate			3.50%
Maximum Borrowing Availability under all Credit Lines	115,000,000
Notes Payable - Financial Services	$ 50,442,000	$ 67,957,000