Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical)

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CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - Senior Convertible Notes [Member]
9 Months Ended
Sep. 30, 2019
Debt Instrument, Interest Rate, Stated Percentage 4.00%
Debt Instrument, Term 5 years