Geographic Consolidation - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 28, 2014
Schedule Of Geographical Information [Line Items]
Severance and one time termination benefits	$ 427
Broadcast Microwave Services [Member]
Schedule Of Geographical Information [Line Items]
Severance and one time termination benefits	427
Broadcast Microwave Services [Member] | Cost of Sales [Member]
Schedule Of Geographical Information [Line Items]
Severance and one time termination benefits	143
Broadcast Microwave Services [Member] | Selling, General and Administrative [Member]
Schedule Of Geographical Information [Line Items]
Severance and one time termination benefits	114
Broadcast Microwave Services [Member] | Research and Development [Member]
Schedule Of Geographical Information [Line Items]
Severance and one time termination benefits	$ 170