Basis of Presentation (Details) (USD $)	6 Months Ended			1 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Apr. 30, 2014 Denmark Acquisition [Member]
Business Acquisition [Line Items]
Acquisition, cash paid	$ 845,000	$ 0		$ 800,000
Acquisition, future royalty payments				1,100,000
Purchase price allocation, intangible and other assets				1,400,000
Purchase price allocation, goodwill	283,333,000		281,714,000	1,300,000
Purchase price allocation, current liabilities				$ 800,000