Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Estimated Useful Lives of Major Classes of Depreciable Assets

the estimated useful lives of the related assets. The estimated useful lives of the major classes of depreciable assets are as follows:

Buildings	50 years
Land improvements	15 - 40 years
Machinery and equipment	3 - 20 years
Furniture and fixtures	15 years
Leasehold improvements	Lesser of lease term or 15 years

Customer Concentration Risk [Member]

Schedule of Customer and Product Concentration Risk

There were three customers that represented greater than 10% of the total net accounts receivable balance at either December 31, 2015 or 2014. The same three customers contributed revenues of 12%, 11% and 10% during the year ended December 31, 2015, which is included in the U.S. segment. No other customers contributed more than 10% of revenue in any of the years ended December 31, 2015, 2014 and 2013.

	Accounts Receivable as of December 31,						Revenue for the year ended December 31,
	2015			2014			2015			2014			2013
Company A		5.8	%		16.5	%		11.3	%		18.0	%		18.8	%
Company B		12.9	%		13.4	%		11.9	%		11.1	%		10.2	%
Company C		10.3	%		9.8	%		9.7	%		8.8	%		9.8	%

Product Concentration Risk [Member]

Schedule of Customer and Product Concentration Risk

The following table sets forth revenues for the Company’s products that represented greater than 10% of total revenue for the years ended December 31, 2015, 2014 and 2013.

	Year Ended December 31,
	2015			2014			2013
DEFINITY		38.1	%		31.8	%		27.5	%
TechneLite		24.7	%		31.0	%		32.5	%
Xenon		16.7	%		12.1	%		11.3	%