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DEFINED CONTRIBUTION PLAN	12 Months Ended
DEFINED CONTRIBUTION PLAN	Dec. 31, 2019
Retirement Benefits [Abstract]
DEFINED CONTRIBUTION PLAN	DEFINED CONTRIBUTION PLAN The Company has a defined contribution retirement plan under Section 401(k) of the Internal Revenue Code ("IRC") that covers substantially all U.S. based employees. The plan allows eligible employees to contribute from 1% to 100% of their pre-tax eligible earnings, subject to defined limits. The Company matches 50% of an employee's voluntary contributions per pay period up to the annual maximum as defined by the IRS. Employer's matching contributions under the Company's plan vest at a rate of 25% for each year of employment and are fully vested after four years of employment for all current and future contributions. During the years ended December 31, 2019, 2018, and 2017, the Company incurred 401(k) matching expense of $5.8 million, $3.9 million, and $1.7 million, respectively.