Intangbiles - Schedule Of Gross Carrying Amount And Accumulated Amortization Of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 82,105	$ 81,959
Accumulated Amortization	37,363	19,963
Net Carrying Amount	44,742	61,996
Developed Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	40,200	40,200
Accumulated Amortization	21,312	9,416
Net Carrying Amount	18,888	30,784
Weighted Average Useful Life	7 years	5 years
In-Process Research And Development
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,900	1,900
Accumulated Amortization	267	0
Net Carrying Amount	1,633	1,900
Weighted Average Useful Life	8 years	7 years
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	17,600	17,600
Accumulated Amortization	3,225	623
Net Carrying Amount	14,375	16,977
Weighted Average Useful Life	9 years	11 years
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,200	5,200
Accumulated Amortization	818	303
Net Carrying Amount	4,382	4,897
Weighted Average Useful Life	10 years	10 years
Lease Agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,600	2,600
Accumulated Amortization	902	245
Net Carrying Amount	1,698	2,355
Weighted Average Useful Life	5 years	8 years
Total Other Acquired Intangible Assets From Vocollect Acquisition
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	67,500	67,500
Accumulated Amortization	26,524	10,587
Net Carrying Amount	40,976	56,913
Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	14,605	14,459
Accumulated Amortization	10,839	9,376
Net Carrying Amount	$ 3,766	$ 5,083
Weighted Average Useful Life	5 years	5 years