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Defined Contribution Retirement Plan	12 Months Ended
Defined Contribution Retirement Plan	Dec. 31, 2019
Retirement Benefits [Abstract]
Defined Contribution Retirement Plan	Defined Contribution Retirement Plan The Company maintains a 401(k) defined contribution retirement plan covering substantially all of its employees. The plan provides for matching and discretionary contributions by the Company. Contributions were $1.5 million, $1.3 million and $1.2 million for the years ended December 31, 2019, 2018 and 2017, respectively.