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Related Party Transactions - Narrative (Details)
1 Months Ended 6 Months Ended
Feb. 28, 2015
USD ($)
ft²
Jun. 30, 2015
USD ($)
ft²
Jun. 30, 2014
USD ($)
Related Party Transaction [Line Items]      
Monthly rent obligation   $ 12,360  
FJM Investments, LLC      
Related Party Transaction [Line Items]      
Area of real estate property | ft²   3,707  
Blackstone Real Estate Partners      
Related Party Transaction [Line Items]      
Area of real estate property | ft² 40,120 20,059  
Lease rent expense   $ 400,000 $ 400,000
Minimum Annual Rent $ 13,900,000