LITIGATION, COMMITMENTS, AND CONTINGENCIES (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	1 Months Ended	3 Months Ended				1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended
	Apr. 30, 2013 item	Nov. 30, 2011 item	Mar. 31, 2013 Capital Funding litigation item	Mar. 31, 2013 Capital Funding litigation Minimum	Mar. 31, 2013 Capital Funding litigation Maximum	Mar. 31, 2013 DUS risk-sharing obligations Fannie Mae DUS program	Dec. 31, 2012 DUS risk-sharing obligations Fannie Mae DUS program Tier 1 loans	Mar. 31, 2013 DUS risk-sharing obligations Fannie Mae DUS program Tier 1 loans	Dec. 31, 2012 DUS risk-sharing obligations Fannie Mae DUS program New Tier 2 loans	Mar. 31, 2013 DUS risk-sharing obligations Fannie Mae DUS program New Tier 2 loans	Dec. 31, 2012 DUS risk-sharing obligations Fannie Mae DUS program Existing Tier 2 loans	Mar. 31, 2013 DUS risk-sharing obligations Fannie Mae DUS program Existing Tier 2 loans item	Dec. 31, 2012 DUS risk-sharing obligations Fannie Mae DUS program US Treasuries	Mar. 31, 2013 DUS risk-sharing obligations Fannie Mae DUS program US Treasuries	Dec. 31, 2012 DUS risk-sharing obligations Fannie Mae DUS program US Federal Agency Securities	Mar. 31, 2013 DUS risk-sharing obligations Fannie Mae DUS program US Federal Agency Securities	Dec. 31, 2012 DUS risk-sharing obligations Fannie Mae DUS program Money market funds holding US Treasuries	Mar. 31, 2013 DUS risk-sharing obligations Fannie Mae DUS program Money market funds holding US Treasuries
LITIGATION, COMMITMENTS AND CONTINGENCIES
Restricted liquidity collateral reduction percentage													0.00%	3.00%	3.00%	4.00%	0.00%	5.00%
Collateral requirements percentage (as a percent)							0.90%	1.10%	0.60%	0.75%	0.51%	0.75%
Period of funding for collateral requirement										48 months
Collateral requirements percentage by lender, quarterly increase												0.30%
Number of quarters for the funding of the increased collateral requirement												8
Amount of additional capital required to be funded on a quarterly basis												$ 6.2
Amount of addition collateral requirement						1.9						49.9
Net worth requirement						86.9
Net worth						190.1
Minimum liquid assets to be maintained to meet operational liquidity requirements						16.1
Operational liquidity						62.7
Amount of damages sought by plaintiff				30
Number of claims asserted against all defendants			3
Amount up to which the entity will be indemnifying Column					3.0
Amount agreed to be paid by William Walker and Mallory Walker to Column				3.0	6.0
Counts of breach of contract filed for summary judgment by defendants		2
Counts of promissory estoppel filed for summary judgment by defendants		2
Counts of unjust enrichment filed for summary judgment by defendants		2
Counts of unfair competition filed for summary judgment by defendants		2
Counts of unjust enrichment for which court issued Opinion and Order which granted the motion	1
Limited loss exposure amount of the Company			$ 3.0