Medafor Matters (Details) - USD ($) shares in Millions	1 Months Ended	3 Months Ended			12 Months Ended
	Apr. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Subsidiary or Equity Method Investee [Line Items]
Additional payment received from C.R. Bard for acquisition of outstanding shares					$ 891,000	$ 530,000	$ 15,421,000
Gain on sale of outstanding shares of common stock					$ 891,000	$ 530,000	$ 12,742,000
Medafor Inc. [Member]
Subsidiary or Equity Method Investee [Line Items]
Additional payment received from C.R. Bard for acquisition of outstanding shares				$ 15,400,000
Shares of Medafor common stock acquired by C.R. Bard				2.4
C.R. Bard, Inc. [Member]
Subsidiary or Equity Method Investee [Line Items]
Additional payment received from C.R. Bard for acquisition of outstanding shares	$ 891,000		$ 530,000
Gain on sale of outstanding shares of common stock		$ 891,000	$ 530,000	$ 12,700,000