Shared-Based Compensation (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Shared-Based Compensation (Textual) [Abstract]
Share-based compensation expense	$ 430	$ 358
Number of Options, Granted	254	278
Vesting period	3 years	3 years
Stock or Unit Option Plan Expense	267	209
Expenses related to issuance of restricted stock	$ 163	$ 149
Shares granted other than options	65	75

This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".

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Reference 3: 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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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