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PARENT COMPANY AND REGULATORY RESTRICTIONS (Details 3) | Dec. 31, 2012 | Dec. 31, 2011
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Condensed Balance Sheets (Parenthetical) |  |
Common stock, authorized shares | 185,000,000 | 185,000,000
Common stock, issued shares | 41,867,046 | 41,749,116
Common stock, outstanding shares | 41,867,046 | 41,749,116
Parent company |  |
Condensed Balance Sheets (Parenthetical) |  |
Common stock, authorized shares | 185,000,000 | 185,000,000
Common stock, issued shares | 41,867,046 | 41,749,116
Common stock, outstanding shares | 41,867,046 | 41,749,116

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