Foreclosed Assets (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Feb. 28, 2014
Activity for foreclosed assets
Balance as of May 31, 2013	$ 261,472
Results of operations	(8,482)
Cash investments (proceeds)	2,160
Ending balance	255,150
CAH
Activity for foreclosed assets
Balance as of May 31, 2013	248,049
Results of operations	(7,853)
Cash investments (proceeds)	7,410
Ending balance	247,606
DRP
Activity for foreclosed assets
Balance as of May 31, 2013	13,423
Results of operations	(629)
Cash investments (proceeds)	(5,250)
Ending balance	$ 7,544