The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Assets:
Short-term investments	$ 78,783	$ 94,304
Interest rate swaps	2,462	3,909
Foreign currency forward exchange contracts not accounted for using hedge accounting	225	359
Foreign currency forward exchange contracts accounted for using hedge accounting		1,533
Total assets at fair value	81,470	100,105
Liabilities:
Foreign currency forward exchange contracts accounted for using hedge accounting	216
Total liabilities at fair value	216
Fair Value, Inputs, Level 1 [Member]
Assets:
Short-term investments	8,940	12,868
Interest rate swaps	0	0
Foreign currency forward exchange contracts not accounted for using hedge accounting	0	0
Foreign currency forward exchange contracts accounted for using hedge accounting		0
Total assets at fair value	8,940	12,868
Liabilities:
Foreign currency forward exchange contracts accounted for using hedge accounting	0
Total liabilities at fair value	0
Fair Value, Inputs, Level 2 [Member]
Assets:
Short-term investments	69,843	80,614
Interest rate swaps	2,462	3,909
Foreign currency forward exchange contracts not accounted for using hedge accounting	225	359
Foreign currency forward exchange contracts accounted for using hedge accounting		1,533
Total assets at fair value	72,530	86,415
Liabilities:
Foreign currency forward exchange contracts accounted for using hedge accounting	216
Total liabilities at fair value	216
Fair Value, Inputs, Level 3 [Member]
Assets:
Short-term investments	0	822
Interest rate swaps	0	0
Foreign currency forward exchange contracts not accounted for using hedge accounting	0	0
Foreign currency forward exchange contracts accounted for using hedge accounting		0
Total assets at fair value	0	$ 822
Liabilities:
Foreign currency forward exchange contracts accounted for using hedge accounting	0
Total liabilities at fair value	$ 0