Stock Options (Details) (USD $)	0 Months Ended
Jul. 09, 2012
Stock Options [Abstract]
Options to purchase common shares granted to the members of the Board of Directors	6,000
Exercise price of options	$ 22.35

Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration