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Credit Facility - Schedule of Credit Facility (Details) - USD ($)
Jun. 30, 2018
Dec. 31, 2017
Line of Credit Facility [Line Items]    
Revolving credit facility, net $ 44,654,000 $ 0
Senior Secured Revolving Credit Facility    
Line of Credit Facility [Line Items]    
Revolving credit facility 45,000,000 0
Less: debt discount, net (346,000) 0
Revolving credit facility, net $ 44,654,000 $ 0