Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other intangible assets:
Gross Amount	$ 78,300	$ 60,900
Accumulated Amortization	16,865	11,483
Net Carrying Amount	61,435	49,417
Customer relationships
Other intangible assets:
Gross Amount	42,000	42,000
Accumulated Amortization	7,636	3,818
Net Carrying Amount	34,364	38,182
Other
Other intangible assets:
Gross Amount	36,300	18,900
Accumulated Amortization	9,229	7,665
Net Carrying Amount	$ 27,071	$ 11,235