Notes Payable and Credit Arrangements Credit Facilitiy Term Disclosure (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended				3 Months Ended	6 Months Ended					3 Months Ended
	Apr. 30, 2014	Jun. 30, 2014 Credit Agreement	Jun. 30, 2014 Credit Agreement Revolving Credit Facility	Jun. 30, 2014 Credit Agreement Ex-Im Facility	Jun. 30, 2014 Prime Rate Credit Agreement	Jun. 30, 2014 N2 Biomedical LLC	Dec. 31, 2013 N2 Biomedical LLC	Sep. 18, 2013 N2 Biomedical LLC	Jun. 30, 2014 N2 Biomedical LLC Credit Agreement Revolving Credit Facility	Jun. 30, 2014 N2 Biomedical LLC Accounts Receivable Revolving Credit Facility	Jun. 30, 2014 N2 Biomedical LLC Prime Rate Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity		$ 1.5	$ 1.0	$ 1.5					$ 1.0
Line of credit facility, expiration date	Apr. 30, 2014					May 31, 2015
Line of credit facility, eligible percentage										75.00%
Debt instrument, basis spread on variable rate					2.50%						0.50%
Debt instrument, interest rate, stated percentage		7.00%				4.50%
Long-term debt						$ 5.4	$ 5.8	$ 6.0
Debt instrument, maturity date						Sep. 18, 2020
Debt instrument, interest rate, stated percentage rate range, minimum											3.75%