Note 4 (Details)	May 31, 2016 shares
Earnings Per Share [Abstract]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	3,000,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	303,152

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

No definition available.

Name:	us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant