Subsequent Events (Details) (Subsequent events, Maximum, USD $) In Millions, unless otherwise specified	Jul. 17, 2012
Subsequent events \| Maximum
Subsequent Events
Amount authorized for issuance of common stock in public offering	$ 28.75

Represents the amount authorized (before related commissions and expenses) for issuance of common stock in public offering.

No definition available.

Name:	ssh_CommonStockValueAuthorizedForIssuanceInPublicOffering
Namespace Prefix:	ssh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant