Revenue from Contract with Customers (Disaggregation by Timing of Revenue Recognition) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues from contracts with customers		$ 51,109	$ 45,152	$ 45,930
Investment Advisory, Management and Administrative Service [Member]
Revenues from contracts with customers	[1]	41,282	35,454	36,848
Investment Advisory, Management and Administrative Service [Member] | Transferred over Time [Member]
Revenues from contracts with customers		41,282	35,454	36,848
Card Interchange Fees [Member]
Revenues from contracts with customers	[1]	4,996	4,287	4,214
Card Interchange Fees [Member] | Transferred at Point in Time [Member]
Revenues from contracts with customers		4,996	4,287	4,214
Deposit Account [Member]
Revenues from contracts with customers	[1]	2,683	2,742	3,684
Deposit Account [Member] | Transferred at Point in Time [Member]
Revenues from contracts with customers		2,136	2,103	2,850
Deposit Account [Member] | Transferred over Time [Member]
Revenues from contracts with customers		547	639	834
Other Noninterest Income [Member]
Revenues from contracts with customers	[1]	2,148	2,669	1,184
Other Noninterest Income [Member] | Transferred at Point in Time [Member]
Revenues from contracts with customers		1,931	2,494	989
Other Noninterest Income [Member] | Transferred over Time [Member]
Revenues from contracts with customers		$ 217	$ 175	$ 195

[1] Revenue from contracts with customers in scope of ASC 606.