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Other Assets (Narrative) (Details)
 6 Months Ended
Jan. 31, 2012
USD ($)
item
Jan. 31, 2012
USD ($)
Dec. 31, 2011
USD ($)
item
Dec. 31, 2011
USD ($)
Jun. 30, 2015
USD ($)
Dec. 31, 2014
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Deferred financing costs         $ 300,000 $ 300,000
Note receivable         $ 100,000 $ 200,000
Promissory Notes [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Principal amount $ 300,000 $ 300,000 $ 300,000 $ 300,000    
Number of promissory notes | item 1   1      
Accrued interest rate (in percent)   4.50%   4.50%    
Notes receivables, maturity date, description         the four year anniversary of the issuance date of the promissory notes, or (ii) an event of default  
Notes receivables, maturity date Jan. 31, 2016   Dec. 31, 2015