Acquisitions, Litigation, and Other Charges Acquisitions, Litigation, and Other Charges Acquisitions, Litigation, and Other Charges - Narrative (Details) $ in Thousands	12 Months Ended			24 Months Ended
	Dec. 31, 2019 USD ($) employee	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2018 USD ($)
Loss Contingencies [Line Items]
Investment advisory fee	$ 10,000
Organizational transformation costs	3,000
Stock-based compensation charges due to accelerated vesting	3,100
Terminated site operations costs	632	$ (1,804)	$ 2,677
Cloverleaf
Loss Contingencies [Line Items]
Severance	2,400
Former Executives
Loss Contingencies [Line Items]
Severance	$ 1,200
Number of executives departed | employee	2
Previously Exited Leased Facility
Loss Contingencies [Line Items]
Terminated site operations costs			$ 2,100	$ 300