Restructuring and Other Impairment Charges, Restructuring Program (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
LMA Restructuring Program
Restructuring Cost And Reserve [Line Items]
Termination benefits	$ 3,282	$ 2,229
Facility closure costs	788
Contract termination costs	7,906	274
Other restructuring costs	176	12
Restructuring charges	12,152	2,515
2013 Restructuring Program
Restructuring Cost And Reserve [Line Items]
Termination benefits	4,787
Contract termination costs	3,326
Other restructuring costs	2,117
Restructuring charges	10,230
2012 Restructuring Charges
Restructuring Cost And Reserve [Line Items]
Termination benefits	2,993	1,681
Facility closure costs	935
Contract termination costs	296	758
Other restructuring costs	5	20
Restructuring charges	$ 4,229	$ 2,459