Subsequent Events - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended			1 Months Ended	12 Months Ended					1 Months Ended
	Jan. 15, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Oct. 31, 2012 Laser Products	Dec. 31, 2013 Laser Products	Dec. 31, 2012 Laser Products	Dec. 31, 2011 Laser Products	Dec. 31, 2013 Laser Products Minimum	Dec. 31, 2013 Laser Products Maximum	Jan. 31, 2014 Subsequent Event Laser Products	Feb. 18, 2014 Subsequent Event JADAK
Subsequent Event [Line Items]
Acquisition of business	$ 82,700,000	$ 80,773,000										$ 93,500,000
Proceed from sell of assets and liabilities		8,190,000	7,000,000		7,000,000						7,500,000
Contingent consideration											3,000,000
Sales from discontinued operations		9,090,000	44,655,000	61,984,000		25,000,000	28,000,000	35,000,000
Expected loss on sale of the business before taxes									1,500,000	2,500,000
Total assets			17,618,000			14,000,000
Total liabilities		$ 54,000	$ 5,605,000			$ 4,000,000