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Stock Based Compensation (Details Textual) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of options for key employees	3 years	3 years
Stock Based Compensation (Textual) [Abstract]
Allocated Share-based Compensation Expense	$ 1,788	$ 828	$ 1,253
Compensation Expense Related with Stock Options	1,093	480	152
Compensation expense for stock awards	695	348	1,101
Total Number Of Shares in Stock Based Compensation Plan		2,500
Maximum number of shares authorized to issued as Options	1,858
Maximum number of shares issued as Options	32
Number of Options, Granted	285	216	33
Weighted average grant date fair value of the options granted	$ 4.27	$ 5.98	$ 2.64
Estimated forfeiture rate for non employee directors	0.00%
Unrecognized compensation costs to be recognized for stock options	800
Unrecognized compensation costs to be recognized for restricted stocks	545
Cash proceeds from the exercise of options	22	2,382	753
Proceeds from the stock options tax benefits	0	0	0
Total intrinsic value of options exercised	$ 107	$ 1,238	$ 89
Common stock issued	78	75	249
Term life of options	10 years
Unrecognized compensation costs, Period for recognition	2 years
Vesting period of stock issue	3 years	3 years
Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of options for key employees	3 years
Stock Based Compensation (Textual) [Abstract]
Vesting period of stock issue	3 years
Non-employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of options for key employees	1 year
Stock Based Compensation (Textual) [Abstract]
Vesting period of stock issue	1 year

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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