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Investment in equity affiliate	12 Months Ended
Investment in equity affiliate	Dec. 31, 2017
Equity Method Investments and Joint Ventures [Abstract]
Investment in equity affiliate	Investment in equity affiliate On December 12, 2017, the Company acquired preferred stock in Corridor Platform Inc. (“Corridor”), a big data credit risk management platform for $3,000. The Company has determined that based on its ownership interest and other rights, Corridor is an equity affiliate. The Company has the right and option to acquire additional preferred stock from Corridor as per the terms of the agreement. The Company's proportionate share of net loss of Corridor for the period December 12, 2017 to December 31, 2017 was insignificant.