The following tables present our financial assets and liabilities that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy. The fair value hierarchy has three levels based on the reliability of the inputs use (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets:
Short-term investments	$ 149,192	$ 126,627
Liabilities:
Interest rate swaps	395
Foreign currency forward exchange contracts accounted for using hedge accounting	1,078
Foreign currency forward exchange contracts not accounted for using hedge accounting	75	253
	1,548	126,880
Fair Value, Inputs, Level 1 [Member]
Assets:
Short-term investments
Liabilities:
Interest rate swaps
Foreign currency forward exchange contracts accounted for using hedge accounting
Foreign currency forward exchange contracts not accounted for using hedge accounting
Fair Value, Inputs, Level 2 [Member]
Assets:
Short-term investments	149,192	126,627
Liabilities:
Interest rate swaps	395
Foreign currency forward exchange contracts accounted for using hedge accounting	1,078
Foreign currency forward exchange contracts not accounted for using hedge accounting	75	253
	1,548	126,880
Fair Value, Inputs, Level 3 [Member]
Assets:
Short-term investments
Liabilities:
Interest rate swaps
Foreign currency forward exchange contracts accounted for using hedge accounting
Foreign currency forward exchange contracts not accounted for using hedge accounting