Commitments and Contingencies (Details) (Lobby and Reciprocal Easement Rental Expenses, Commerce Street Building, USD $)	Jun. 30, 2012
Lobby and Reciprocal Easement Rental Expenses \| Commerce Street Building
Commitments Related to Leased Properties [Line Items]
Contractual obligation for leased property	$ 153,000

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

No definition available.

Name:	us-gaap_ContractualObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant