Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended								12 Months Ended							12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Pre Adoption Accounting Standards Update 2009-13	Dec. 31, 2012 Pre Adoption Accounting Standards Update 2009-13	Dec. 31, 2011 Pre Adoption Accounting Standards Update 2009-13	Jun. 30, 2013 UNITED KINGDOM	Dec. 31, 2012 UNITED KINGDOM	Dec. 31, 2013 Maximum	Dec. 31, 2013 Maximum Laser Products	Dec. 31, 2013 Maximum Precision Motion	Dec. 31, 2013 Maximum Medical Technologies	Dec. 31, 2013 Maximum Buildings and improvements	Dec. 31, 2013 Maximum Machinery and Equipment	Dec. 31, 2013 Minimum	Dec. 31, 2013 Minimum Laser Products	Dec. 31, 2013 Minimum Precision Motion	Dec. 31, 2013 Minimum Medical Technologies	Dec. 31, 2013 Minimum Buildings and improvements	Dec. 31, 2013 Minimum Machinery and Equipment
Significant Accounting Policies [Line Items]
Cash equivalents original maturity period									3 months
Equity method investment ownership percentage							41.20%	25.10%	50.00%						20.00%
Earnings from equity investment	$ 1,469,000	$ 556,000	$ 1,171,000
Net investment	5,700,000	4,100,000
Property, plant and equipment, estimated useful lives													30 years	13 years					3 years	1 year
Standard warranty period										24 months	24 months	60 months				12 months	12 months	12 months
Service contract period	1 year
Payment terms									180 days
Recognition of deferred revenue				0	300,000	31,500,000
Post-emergence professional fees	$ 0	$ 0	$ 296,000