Fair Value Measurements and Derivative Instruments (Available-for-sale Securities Maturities) (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Amortized cost
Within 1 year	$ 4,150
After 1 year through 5 years	25,222
After 5 years through 10 years	40,801
After 10 years	132,040
Amortized cost	202,213	$ 196,923
Estimated fair value
Within 1 year	3,974
After 1 year through 5 years	22,983
After 5 years through 10 years	38,697
After 10 years	105,575
Total	$ 171,229	$ 157,979