Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Unaudited) (Parentheticals)

v2.4.1.9
Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Statement Of Financial Position [Abstract]    
Ordinary shares, par value (in dollars per shares) $ 0.001us-gaap_CommonStockParOrStatedValuePerShare $ 0.001us-gaap_CommonStockParOrStatedValuePerShare
Ordinary shares, authorized 490,000,000us-gaap_CommonStockSharesAuthorized 490,000,000us-gaap_CommonStockSharesAuthorized
Ordinary shares, issued 232,205,590us-gaap_CommonStockSharesIssued 229,719,240us-gaap_CommonStockSharesIssued
Ordinary shares, treasury stock 230,116,780us-gaap_TreasuryStockShares 227,630,430us-gaap_TreasuryStockShares