Commitments and Contingencies (Details)	9 Months Ended			3 Months Ended	9 Months Ended					9 Months Ended				9 Months Ended				3 Months Ended		9 Months Ended
	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Sep. 30, 2012 Governmental Proceedings [Member] Vari-Lase [Member] USD ($)	Sep. 30, 2011 King Agreements [Member] USD ($)	Sep. 30, 2012 King Agreements [Member] USD ($)	Sep. 30, 2011 King Agreements [Member] USD ($)	Dec. 31, 2011 King Agreements [Member] USD ($)	May 31, 2007 King Agreements [Member]	Jan. 09, 2007 King Agreements [Member]	Sep. 30, 2012 King Agreements [Member] Thrombi-Paste [Member] USD ($)	Jan. 09, 2007 King Agreements [Member] Thrombi-Paste [Member] USD ($)	May 31, 2007 King Agreements [Member] Thrombi-Gel [Member] USD ($)	Jan. 09, 2007 King Agreements [Member] Thrombi-Gel [Member] USD ($)	Sep. 30, 2012 Nicolai GmbH Agreement [Member] USD ($)	Sep. 30, 2011 Nicolai GmbH Agreement [Member] USD ($)	Dec. 31, 2011 Nicolai GmbH Agreement [Member] USD ($)	Apr. 01, 2008 Nicolai GmbH Agreement [Member] EUR (€)	Mar. 31, 2012 Radius Medical Technologies, Inc. [Member] USD ($)	Sep. 30, 2011 Radius Medical Technologies, Inc. [Member] USD ($)	Sep. 30, 2012 Radius Medical Technologies, Inc. [Member] USD ($)	Dec. 31, 2011 Radius Medical Technologies, Inc. [Member] USD ($)	Jun. 09, 2011 Radius Medical Technologies, Inc. [Member] USD ($)	Oct. 20, 2010 Radius Medical Technologies, Inc. [Member] USD ($)
Governmental Proceedings [Abstract]
Total U.S. sales, maximum			$ 432,000
Total U.S. sales, percentage (in hundredths)			0.10%
Alleged amount of damages			20,000,000
Number of agreements entered									3
License fee received					6,000,000
Number of separate milestone payments									2
Individual milestone payment										1,000,000		1,000,000
Milestone payment to be received upon first commercial sale of product										1
Amortization period for license fee									10 years
Remaining amortization period for milestone payment								10 years
One time payment if product is not approved by FDA											2,500,000		2,500,000
Amortization of license fee				2,762,000	153,000	3,171,000								109,000	108,000
Future amortization of deferred revenue					51,000
Unamortized license fee					866,000		1,019,000							73,000		182,000	500,000
Distribution agreement term														5 years
Radius Medical Technologies, Inc. Contingent Consideration [Abstract]
Business acquisition, cost of acquired entity, purchase price, total																							6,449,000
Business acquisition, cost of acquired entity, cash paid																						1,449,000	5,000,000
Percentage of the net sales company is entitled to receive (in hundredths)																				25.00%
Annual sales base to compute contingent consideration potential cash payment year one																				2,000,000
Annual sales base to compute contingent consideration potential cash payment year two																				2,500,000
Annual sales base to compute contingent consideration potential cash payment year three																				3,000,000
Range of possible contingent consideration payments value, low																				0
Reduction in liability recorded as contingent consideration, recognized	96,000	586,000																96,000	586,000
Business acquisition, contingent consideration recorded																				$ 214,000	$ 310,000