Quarterly Results of Operations (Unaudited) - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Foreign exchange gains or losses on intercompany loans after tax	$ 350	$ 826	$ 659	$ 1,109	$ 734
Restructuring and non-operating charges	399
Elimination of Valuation allowances of deferred assets after tax		7,257
Impairment charges		$ 967