Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Fees and other income:
Revenue from contracts with customers	$ 19,633	$ 22,005	$ 40,681	$ 44,397
Non-interest income within the scope of other GAAP topics	3,029	2,375	3,502	5,231
Total fees and other income	22,662	24,380	44,183	49,628
Wealth management and trust fees
Fees and other income:
Revenue from contracts with customers	17,261	18,912	35,632	37,970
Investment management fees
Fees and other income:
Revenue from contracts with customers	1,770	2,455	3,695	5,105
Other Income
Fees and other income:
Revenue from contracts with customers	602	$ 638	1,354	$ 1,322
Other liabilities
Revenues from External Customers and Long-Lived Assets [Line Items]
Deferred revenue	$ 6,000		$ 6,000		$ 6,500