Business Combinations - Acquired Intangible Assets and Estimated Useful Lives (Details) - RTK $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 4,520
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 2,780
Estimated Useful Life	5 years
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 1,650
Estimated Useful Life	2 years
Non-compete agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 70
Estimated Useful Life	2 years
Trademark & trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 20
Estimated Useful Life	6 months