Right-Of-Use Lease Assets and Lease Liabilities - Lease Expense and Supplemental Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Leases [Abstract]
Operating lease, expense	$ 13,560,000
Operating lease, expense		$ 13,378,000	$ 7,780,000
Weighted average remaining lease term	8 years 4 months 13 days
Weighted average discount rate	3.27%