Goodwill and Other Intangible Assets, Net - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Adjustments to purchase price allocations	$ 800,000	$ 2,600,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	0	0
Amortization expense related to finite-lived intangible assets	17,600,000	10,200,000	8,700,000
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average period (in years)	13 years 7 months 6 days
Proprietary technology [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average period (in years)	12 years 3 months 18 days
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average period (in years)	11 years 4 months 7 days
Bornemann [Member]
Finite-Lived Intangible Assets [Line Items]
Adjustments to purchase price allocations	800,000
Proceeds from previous acquisition	700,000
Bornemann [Member] | Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		11,400,000
Bornemann [Member] | Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		17,600,000
Weighted average period (in years)		9 years 7 months 6 days
Bornemann [Member] | Proprietary technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		17,100,000
Weighted average period (in years)		12 years 2 months 6 days
Shape Cutting Businesses [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill disposed off		$ 12,900,000