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CONSOLIDATED BALANCE SHEETS (Parenthetical) (CHF)
In Thousands, except Per Share data, unless otherwise specified
Dec. 31, 2012
Mar. 31, 2012
CONSOLIDATED BALANCE SHEETS    
Shares, par value (in CHF per share) 0.25 0.25
Shares, issued 173,106 191,606
Shares, authorized 173,106 191,606
Shares, conditionally authorized 50 50
Treasury, at cost, shares 15,113 27,173