Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Sep. 10, 2019	Sep. 29, 2017
Other Commitments [Line Items]
Non-cancelable purchase commitments	$ 62.3
Indemnification [Member]
Other Commitments [Line Items]
Accrual for indemnification provisions	0.0
ISRAEL
Other Commitments [Line Items]
Royalty expenses	4.1	$ 4.2	$ 5.2
Property Lease Guarantee [Member] | Performance Guarantee [Member]
Other Commitments [Line Items]
Guarantees, Fair Value Disclosure	2.7	2.3
JPMORGAN CHASE BANK N.A. [Member] | Revolving Credit Facility [Member]
Other Commitments [Line Items]
Line of Credit Facility, Current Borrowing Capacity	$ 0.0
Debt Instrument, Interest Rate, Stated Percentage	1.25%
Letters of Credit Outstanding, Amount	$ 0.3
JPMORGAN CHASE BANK N.A. [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Other Commitments [Line Items]
Line of Credit Facility, Current Borrowing Capacity	25.0
Silicon Valley Bank [Member] | Revolving Credit Facility [Member]
Other Commitments [Line Items]
Line of Credit Facility, Current Borrowing Capacity				$ 0.0	$ 15.0
Letters of Credit Outstanding, Amount				$ 2.2
Outstanding Borrowing Limit Based on Eligible Receivables, Percentage					85.00%
Foreign Line of Credit [Member] | Performance Guarantee [Member]
Other Commitments [Line Items]
Long-term Line of Credit			2.0
Indemnity issued to secure credit facility			$ 2.2
Line of Credit Facility, Fair Value of Amount Outstanding	$ 0.0	$ 0.0
London Interbank Offered Rate (LIBOR) [Member] | JPMORGAN CHASE BANK N.A. [Member] | Revolving Credit Facility [Member]
Other Commitments [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.50%
LIBOR for interest period of one, two or three months [Member] | JPMORGAN CHASE BANK N.A. [Member] | Revolving Credit Facility [Member]
Other Commitments [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.25%
One Month LIBOR [Member] | JPMORGAN CHASE BANK N.A. [Member] | Revolving Credit Facility [Member]
Other Commitments [Line Items]
LIBOR interest period	1 month
Two Month LIBOR [Member] | JPMORGAN CHASE BANK N.A. [Member] | Revolving Credit Facility [Member]
Other Commitments [Line Items]
LIBOR interest period	2 months
Three Month LIBOR [Member] | JPMORGAN CHASE BANK N.A. [Member] | Revolving Credit Facility [Member]
Other Commitments [Line Items]
LIBOR interest period	3 months