Condensed Consolidated Balance Sheets (Parenthetical)	Sep. 30, 2011	Dec. 31, 2010
Stockholders' equity
Treasury stock at cost	352,161	476,227
Total stockholders' equity, shares outstanding	19,297,975	18,375,058

Total number of shares of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares represent the ownership interest of the common shareholders. Shares outstanding equals shares issued minus shares held in treasury and other adjustments, if any.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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