Depreciation and Amortization by Reportable Segments (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Depreciation and Amortization
Depreciation and Amortization	$ 20,734	$ 15,427	$ 14,466
Laser Products
Depreciation and Amortization
Depreciation and Amortization	7,119	9,192	7,503
Medical Technologies
Depreciation and Amortization
Depreciation and Amortization	8,808	702	688
Precision Motion
Depreciation and Amortization
Depreciation and Amortization	1,979	2,066	2,768
Corporate, Shared Services and Unallocated
Depreciation and Amortization
Depreciation and Amortization	$ 2,828	$ 3,467	$ 3,507