Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended
	Nov. 30, 2012	Dec. 31, 2014	Dec. 31, 2012
Schedule Of Commitments And Contingencies [Line Items]
Number of days the cross-license expires upon change of control when cross-licensing continuation fee is not paid		30 days
Long-term Line of Credit	$ 15.0
Term Loan Debt	20.0
Prime Rate Plus	0.50%
Term Loan Advances Aggregate Amount	7.0
Debt Instrument, Unused Borrowing Capacity, Amount	13.0	15.0
Debt Instrument Basis Spread On Treasury Variable Rate	6.94%
Debt Instrument, Maturity Date	Nov. 01, 2016
Debt Issuance Cost			1.1
Unamortized Debt Issuance Expense		0.3
Potential Rental Rate Adjustment Minimum		2.50%
Potential Rental Rate Adjustment Maximum		4.00%
Purchase commitments with vendors total		18.0
Purchase commitments with vendors total maximum term, in years		1 year
2015		2.3
2016		2.3
Total		$ 4.6
Lessee Leasing Arrangements, Operating Leases, Renewal Term		5 years
6310,6340 and 6290 Sequence Drive Lease [Member]
Schedule Of Commitments And Contingencies [Line Items]
Lessee Leasing Arrangements, Operating Leases, Number of Renewal Term		2
Sweden Lease [Member]
Schedule Of Commitments And Contingencies [Line Items]
Lessee Leasing Arrangements, Operating Leases, Number of Renewal Term		2
Lessee Leasing Arrangements, Operating Leases, Renewal Term		3 years
Sweetspot [Member]
Schedule Of Commitments And Contingencies [Line Items]
Term of lease (years)		5 years