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Consolidated Balance Sheets (Parenthetical) (First Aviation Services, Inc. [Member], USD $)
Dec. 31, 2011
Dec. 31, 2010
Treasury stock, shares 61,651 68,188
Preferred stock, par value per share $ 0.01 $ 0.01
Preferred stock, redemption price per share $ 100.0 $ 100.0
Preferred stock, shares authorized 30,000 30,000
Preferred stock, shares issued 18,354 15,841
Preferred stock, shares outstanding 18,354 15,841
Class A Common Stock [Member]
    
Ordinary shares, par value per share $ 0.2 $ 0.2
Ordinary shares, shares authorized 1,000,000 1,000,000
Ordinary shares, shares issued 671,994 566,031
Ordinary shares, shares outstanding 610,343 497,843
Class B Common Stock [Member]
    
Ordinary shares, par value per share $ 0.2 $ 0.2
Ordinary shares, shares authorized 300,000 300,000
Ordinary shares, shares issued 288,333 288,333
Ordinary shares, shares outstanding 288,333 288,333