Costs Associated with Exit and Restructuring - Summary of Exit and Restructuring Costs Incurred (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended		24 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013
Restructuring Cost and Reserve [Line Items]
Severance, stay bonuses, and other employee-related expenses	$ 5,690	$ 960	$ 6,650
Professional services	180	0	180
Relocation and transition costs	20	0	20
Total	5,890	960	6,850
ZES [Member]
Restructuring Cost and Reserve [Line Items]
Additional costs expected to be incurred		5,380
Total costs expected to be incurred		6,340
Severance, stay bonuses, and other employee-related expenses		960
Professional services		0
Relocation and transition costs		0
Total		960
Severance, Stay Bonuses, and Other Employee-Related Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Additional costs expected to be incurred			61
Total costs expected to be incurred			6,711
Severance, Stay Bonuses, and Other Employee-Related Expenses [Member] | ZES [Member]
Restructuring Cost and Reserve [Line Items]
Additional costs expected to be incurred		4,590
Total costs expected to be incurred		5,550
Professional Services [Member]
Restructuring Cost and Reserve [Line Items]
Additional costs expected to be incurred			0
Total costs expected to be incurred			180
Professional Services [Member] | ZES [Member]
Restructuring Cost and Reserve [Line Items]
Additional costs expected to be incurred		310
Total costs expected to be incurred		310
Relocation and Transition Costs [Member]
Restructuring Cost and Reserve [Line Items]
Additional costs expected to be incurred			0
Total costs expected to be incurred			20
Relocation and Transition Costs [Member] | ZES [Member]
Restructuring Cost and Reserve [Line Items]
Additional costs expected to be incurred		480
Total costs expected to be incurred		480
Location Solution And Manufacturing Operations [Member]
Restructuring Cost and Reserve [Line Items]
Additional costs expected to be incurred			61
Total costs expected to be incurred			$ 6,911