Commitments and Contingencies (Narrative) (Details) - USD ($)		12 Months Ended
	Jan. 01, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2003
Right-of-use assets		$ 6,500,000	$ 6,100,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]		Other Assets, Noncurrent	Other Assets, Noncurrent
Lease liabilities		$ 6,828,000	$ 6,400,000
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]		Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Additional lease assets recorded			$ 2,279,000
Payments on lease liabilities		$ 1,797,000	1,777,000
Total lease expense		$ 1,807,000	$ 1,765,000	$ 1,752,000
Option to extend		true
Weighted average remaining lease term		6 years 3 months 18 days
Weighted average discount rate		4.80%
Contingent cash payment					$ 1,000,000
Interim License Agreement with American Society of Composers, Authors and Publishers
License agreement term	5 years