Segments (Narrative) (Detail)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Czech Republic [Member]	Dec. 31, 2012 Minimum [Member]	Dec. 31, 2012 Maximum [Member]
Segment Reporting Information [Line Items]
Percentage of long lived assets excluding goodwill single geography represented			10.00%
Entity wide revenue major customer percentage	11.00%	11.00%
Entity wide revenue major customer agreement term				5 years	10 years
Entity wide revenue major customer remaining agreement term				1 year	10 years