Shareholders' Equity (Issued Share Capital) (Details) $ in Thousands	Jun. 30, 2015 USD ($) shares	Jun. 30, 2015 SFr / shares	Dec. 31, 2014 USD ($) shares	Dec. 31, 2014 SFr / shares
Stockholders' Equity Note [Abstract]
Common shares issued and fully paid, 2015 and 2014: CHF 4.10 per share | shares	95,523,230		100,775,256
Common shares, par value		SFr 4.1		SFr 4.1
Total share capital | $	$ 386,702		$ 408,020