Acquisitions, Litigation, and Other Charges Acquisitions, Litigation, and Other Charges - Narrative (Details) - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Business Acquisition [Line Items]
Acquisition related costs	$ 15,014,000		$ 51,000	$ 16,455,000	$ 51,000
Litigation	467,000		0	1,377,000	0
Severance	1,200,000
Accelerated equity award vesting				$ 3,100,000
Accelerated equity award vesting (in shares)		100,000		100,000
Share-based compensation expense (modification and acceleration of equity awards)		$ 2,900,000			2,000,000
Non-offering related equity issuance expenses	(164,000)		0	$ 1,347,000	1,242,000
Non-recurring public company implementation costs	0		$ 162,000	0	$ 162,000
Cloverleaf and Lanier
Business Acquisition [Line Items]
Acquisition related costs	10,000,000			$ 10,000,000
Cloverleaf
Business Acquisition [Line Items]
Severance	$ 2,600,000