Selected Segment Financial Data, Assets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]
Revenues	$ 221,473	$ 161,997
Income (loss) before income taxes	(9,742)	(4,610)
Americas | Operating Segments
Segment Reporting Information [Line Items]
Revenues	154,769	94,313
Income (loss) before income taxes	16,281	12,967
EMEA | Operating Segments
Segment Reporting Information [Line Items]
Revenues	47,461	47,571
Income (loss) before income taxes	17,510	15,055
Asia/Pacific | Operating Segments
Segment Reporting Information [Line Items]
Revenues	19,243	20,113
Income (loss) before income taxes	5,579	5,840
Corporate | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Income (loss) before income taxes	$ (49,112)	$ (38,472)