Leases - Summary of ROU Assets and Liabilities (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Leases [Abstract]
Operating lease, right-of-use asset	$ 23,732
Operating lease, liability	$ 24,587
Weighted average remaining lease term (in years)	6 years 5 months 12 days
Weighted average discount rate (as a percentage)	1.87%
Operating lease liability, statement of fnancial position [Extensible List]	us-gaap:AccruedLiabilitiesAndOtherLiabilities