Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Stock Options (Details 4)

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Stock Options (Details 4) (USD $)
In Thousands, unless otherwise specified
1 Months Ended 12 Months Ended
May 31, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Total stock-based compensation expenses $ 4,500 $ 8,874 $ 1,587 $ 1,242
Cost Of Sales [Member]
       
Total stock-based compensation expenses   603 0 0
Research and Development Expense [Member]
       
Total stock-based compensation expenses   960    
Selling, General and Administrative Expenses [Member]
       
Total stock-based compensation expenses   $ 7,311 $ 1,587 $ 1,242