Background and Business Description Tier 2 Notes (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($)
Tier 2 Notes	$ 240,000
Tier 2 Note Security in RMBS Litigation Settlement Proceeds	$ 1,600,000
Tier 2 Termination Date from Date of Execution of Rehab Exit Support Agreement	365 days