Fair Value Measurements and Derivative Instruments (Available-for-sale Securities Maturities) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Amortized cost
Within 1 year	$ 2,640
After 1 year through 5 years	14,947
After 5 years through 10 years	72,584
After 10 years	164,092
Amortized cost	254,263	$ 260,145
Estimated fair value
Within 1 year	2,399
After 1 year through 5 years	13,501
After 5 years through 10 years	59,847
After 10 years	129,199
Total	$ 204,946	$ 208,266