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Transactions Affecting Stockholders' Equity (Details Textual) (USD $)
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6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | |||||||
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Jun. 30, 2012
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Jun. 30, 2011
Chief Operating Officer and Chief Financial Officer [Member]
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Jun. 30, 2012
Chief Operating Officer and Chief Financial Officer [Member]
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Jun. 30, 2011
Chief Operating Officer and Chief Financial Officer [Member]
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Jun. 30, 2012
Plan 1997 [Member]
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Mar. 31, 2010
Plan 1997 [Member]
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Jun. 30, 2012
Plan 2010 [Member]
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Jun. 30, 2011
Plan 2010 [Member]
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Jun. 30, 2012
Plan 2010 [Member]
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Jun. 30, 2011
Plan 2010 [Member]
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Jun. 30, 2012
Directors Plan 2010 [Member]
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Jun. 30, 2011
Directors Plan 2010 [Member]
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Jun. 30, 2012
Directors Plan 2010 [Member]
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Jun. 30, 2011
Directors Plan 2010 [Member]
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| Option Indexed to Issuer's Equity, Strike Price | $ 45 | |||||||||||||
| Minimum Percentage Of Common Stock To Be Acquired To Exercise Rights | 15.00% | |||||||||||||
| Percentage Of Discount On Market Value Of Share By Exercise Of Rights | 50.00% | |||||||||||||
| Cash Less Exercise Of Right Terms | In the event of a cashless exercise of the Right and the acquirer has acquired less than 50% beneficial ownership of the Company, a stockholder may exchange one Right for one common share of the Company. | |||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 4,500,000 | 1,800,000 | 1,800,000 | |||||||||||
| Share Based Compensation Arrangement By Share Based Payment Option Expiration Terms | No incentive stock option could be exercisable more than ten years after the date of grant or five years after the date of grant where the individual owns more than ten percent of the total combined voting power of all classes of stock. | |||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 118,750 | |||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number | 1,449,750 | |||||||||||||
| Allocated Share-based Compensation Expense | $ 40,000 | $ 81,000 | ||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized | 900,000 | 900,000 | 250,000 | 250,000 | ||||||||||
| Stock Issued During Period, Shares, Share-based Compensation, Gross | 15,170 | 10,757 | 25,220 | |||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period | 13,659 | 17,605 | ||||||||||||
| Stock Issued During Period, Value, Share-based Compensation, Gross | 12,500 | 12,500 | 25,000 | |||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period | 1,331,000 | |||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period | 431,000 | |||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | 0 | 524,329 | 0 | 524,329 | 0 | 32,560 | 0 | 64,850 | ||||||
| Common Stock Value Issued For Payable | $ 50,000 | |||||||||||||