Restructuring and Related Charges - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2013 Employees
Restructuring Cost and Reserve [Line Items]
Number of involuntary termination of employees	30
Restructuring accrual costs	$ 247
Restructuring charges	424
Restructuring charges in continued operations	565
Estimated leasehold improvements related restructuring	101
Operating expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	400
Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring accrual costs	247
Restructuring charges in continued operations	464
Estimated leasehold improvements related restructuring
Product cost of revenue [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	200
Product cost of revenue [Member] | Operating expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	600
Severance and benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges in continued operations	464
HFC business [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges in discontinued operations	367
Number of involuntary termination of employees	9
Number of terminated employees required to work end of Aurora TSA Period	3
Restructuring accrual costs	165
HFC business [Member] | Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges in discontinued operations	243
Restructuring accrual costs	165
HFC business [Member] | Contract termination [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges in discontinued operations	124
Restructuring accrual costs