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Borrowings - Tinuum Group (Details)
Dec. 31, 2016
Mar. 03, 2016
Feb. 10, 2014
RMC6, LLC (RCM6) | Disposed of by Sale      
Debt Instrument [Line Items]      
Ownership interest, percent   24.95%  
RMC6, LLC (RCM6)      
Debt Instrument [Line Items]      
Ownership interest, percent 24.95% 24.95% 24.95%
Interest rate, stated percentage     1.65%
Interest rate, effective percentage     20.00%