Fair Value Measurement (Tables)

12 Months Ended

Dec. 31, 2017

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities

The Company’s financial assets and liabilities, subject to fair value measurements, as of December 31, 2017 and 2016 are as follows: 

Note E – Fair Value Measurement (continued)

			December 31, 2017
			Fair Value Measurements Using Fair Value Hierarchy
	Fair value		Level 1		Level 2		Level 3
Assets:
Cash equivalents	$	58,436	$	58,436	$	—	$	—
Current marketable securities – available for sale	64,027		64,027		—		—
Long-term marketable securities – available for sale	29,523		29,523		—		—
Total assets	$	151,986	$	151,986	$	—	$	—
Liabilities:
Contingent consideration	$	10,000	$	—	$	—	$	10,000
Forward contracts	783		—		783		—
Total liabilities	$	10,783	$	—	$	783	$	10,000

			December 31, 2016
			Fair Value Measurements Using Fair Value Hierarchy
	Fair value		Level 1		Level 2		Level 3
Assets:
Cash equivalents	$	3,309	$	3,309	$	—	$	—
Current marketable securities – available for sale	39,495		39,495		—		—
Long-term marketable securities – available for sale	70,559		70,559		—		—
Forward contracts	191		—		191		—
Total assets	$	113,554	$	113,363	$	191	$	—
Liabilities:
Contingent consideration	$	7,948	$	—	$	—	$	7,948
Total liabilities	$	7,948	$	—	$	—	$	7,948