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Other Long Term Liabilities	12 Months Ended
Other Long Term Liabilities	Dec. 31, 2019
Other Liabilities Disclosure [Abstract]
Other Long Term Liabilities	Other Long Term Liabilities As of December 31, 2019, other long-term liabilities mainly consist of unrecognized tax benefit liabilities and the long-term portion of notes payables of $13.0 million and a derivative liability of $14.5 million. As of December 31, 2018, other long-term liabilities mainly consist of unrecognized tax benefit liabilities and the long-term portion of notes payables of $10.5 million and a derivative liability of $4.1 million.