Acquisitions, Litigation, and Other Charges Acquisitions, Litigation, and Other Charges - Narrative (Details)	3 Months Ended			9 Months Ended
	Sep. 30, 2019 USD ($)	Mar. 31, 2019 shares	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) employee shares	Sep. 30, 2018 USD ($)
Business Acquisition [Line Items]
Acquisition related costs	$ 2,671,000		$ 21,000	$ 19,126,000	$ 72,000
Investment advisory fee				10,000,000.0
Litigation	197,000		0	1,574,000	0
Organizational transformation costs				1,500,000
Accelerated equity award vesting				$ 3,100,000
Accelerated equity award vesting (in shares) | shares		100,000		100,000
Share-based compensation expense from equity modification					2,000,000.0
Non-offering related equity issuance expenses	(29,000)		604,000	$ 1,318,000	1,846,000
Non-recurring public company implementation costs	$ 0		$ 496,000	0	$ 658,000
Cloverleaf
Business Acquisition [Line Items]
Severance				2,100,000
Former Director
Business Acquisition [Line Items]
Severance				$ 1,200,000
Number of departed executives | employee				2