Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Gross carrying Amount	$ 152,977	$ 166,405
Accumulated amortization	109,468	119,198
Net carrying value	43,509	47,207
Weighted average life in years	9 years 4 months	9 years 4 months
Patents
Finite-Lived Intangible Assets [Line Items]
Gross carrying Amount	1,369	19,104
Accumulated amortization	649	18,226
Net carrying value	720	878
Weighted average life in years	9 years 10 months	9 years 1 month
Developed Technology Rights
Finite-Lived Intangible Assets [Line Items]
Gross carrying Amount	78,686	76,414
Accumulated amortization	62,257	59,147
Net carrying value	16,429	17,267
Weighted average life in years	7 years 5 months	7 years 6 months
Trademarks And Tradenames
Finite-Lived Intangible Assets [Line Items]
Gross carrying Amount	13,092	12,677
Accumulated amortization	7,306	6,633
Net carrying value	5,786	6,044
Weighted average life in years	12 years 0 months	12 years 1 month
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying Amount	57,617	56,700
Accumulated amortization	39,146	33,761
Net carrying value	18,471	22,939
Weighted average life in years	11 years 0 months	11 years 1 month
Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Gross carrying Amount	2,213	1,510
Accumulated amortization	110	1,431
Net carrying value	$ 2,103	$ 79
Weighted average life in years	13 years 4 months	9 years 5 months