Unrecognized Tax Benefits (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Contingency [Line Items]
Unrecognized tax benefits at beginning of period	$ 12,264,000	$ 14,956,000	$ 13,143,000
Gross change for prior period positions	2,471,000	(3,029,000)	1,425,000
Gross change for current year positions	4,517,000	268,000	640,000
Decrease due to settlements and payments	0	0	0
Decrease due to statute expirations	(1,381,000)	0	(123,000)
Increase due to effect of foreign currency translation	0	0	0
Decrease due to effect from foreign currency translation	126,000	69,000	(129,000)
Unrecognized tax benefits at end of period	17,997,000	12,264,000	14,956,000
Maturing in the Next Twelve Months [Member]
Income Tax Contingency [Line Items]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 1,100,000