Foreclosed Assets (Details) - USD ($) $ in Thousands		9 Months Ended
		Feb. 29, 2016	Sep. 30, 2015	May. 31, 2015	Feb. 28, 2015
Activity for foreclosed assets
Beginning balance		$ 116,507
Ending balance		118,411
Assets		24,393,025		$ 22,846,059	$ 22,648,921
Liabilities		23,676,529		$ 21,934,273
CAH
Activity for foreclosed assets
Assets		164,000
Liabilities		241,000
Net equity		77,000
Loans and Interest Payable		190,000
Foreclosed Assets
Activity for foreclosed assets
Beginning balance		116,507
Fair value valuation adjustment loss	[1]	(1,904)
Ending balance		$ 118,411
Foreclosed Assets | CAH
Activity for foreclosed assets
Purchase price			$ 145,000
Purchase price			$ 145,000

[1] Included as a component of results of foreclosed assets on our consolidated statements of operations.