Related Party Transactions (Details) (USD $)	Jun. 20, 2011
Related Party Transactions (Details)
Date of Omnibus Agreement	Jun. 20, 2011
Term of indemnification	3 years
Related party's maximum liability for indemnification	$ 5,000,000
Amount of aggregate losses required to create indemnification obligation	$ 250,000

Period of time (in years) under the Omnibus Agreement during which we are indemnified against certain potential environmental claims, losses and expenses associated with the operation of our predecessor prior to completion of the initial public offering.

No definition available.

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Namespace Prefix:	gsjk_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	instant