Condensed Consolidated Balance Sheets (Parenthetical)	Jun. 30, 2012	Dec. 31, 2011
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Treasury stock, common shares	352,161
Common stock, shares outstanding	19,351,985	19,303,844

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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

-Publisher FASB

-Name Accounting Standards Codification

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-Name Accounting Principles Board Opinion (APB)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant