Condensed Consolidated Statement of Shareholders' Equity (Unaudited) (Parenthetical) (USD $)	Sep. 30, 2013
Convertible senior notes interest rate	3.00%
Silcon [Member]
Closing share price at September 30, 2013 for investments available for sale	$ 6.73
Cytochroma [Member]
Closing share price at September 30, 2013 for investments available for sale	$ 7.16
PROLOR [Member]
Closing share price at September 30, 2013 for investments available for sale	$ 8.49
Farmadiet [Member]
Closing share price at September 30, 2013 for investments available for sale	$ 7.52