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Equity Method Investments (Details) - USD ($)
$ in Thousands
1 Months Ended 9 Months Ended
Oct. 31, 2014
Sep. 30, 2016
Sep. 30, 2015
Schedule of Equity Method Investments [Line Items]      
Equity investments $ 600 $ 800 $ 2,702
Equity Method Investment, Ownership Percentage   25.00%  
Aggregate cost of equity method investment $ 5,000    
Equity Method Investments   $ 4,129