Equity Investment	9 Months Ended
	Sep. 30, 2020
Equity Method Investments and Joint Ventures [Abstract]
Equity Investment	Equity InvestmentIn October 2016, we purchased a 10% equity interest in a privately held variable interest entity within the real estate industry for $10.0 million. In March 2020, we recognized a non-cash impairment charge of $5.3 million related to this investment. The impairment charge is included in Impairment costs within our IMT segment for the nine months ended September 30, 2020. In June 2020, we sold our 10% equity interest for $10.0 million in cash. We recorded a gain on the sale of the investment of $5.3 million during the nine months ended September 30, 2020, which is classified in Other income within our IMT segment in our condensed consolidated statements of operations.