Quarterly report pursuant to Section 13 or 15(d)

Transactions Affecting Stockholders' Equity (Details Textual)

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Transactions Affecting Stockholders' Equity (Details Textual) (USD $)
6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Chief Operating Officer and Chief Financial Officer [Member]
Jun. 30, 2012
Chief Operating Officer and Chief Financial Officer [Member]
Jun. 30, 2011
Chief Operating Officer and Chief Financial Officer [Member]
Jun. 30, 2012
Plan 1997 [Member]
Mar. 31, 2010
Plan 1997 [Member]
Jun. 30, 2012
Plan 2010 [Member]
Jun. 30, 2011
Plan 2010 [Member]
Jun. 30, 2012
Plan 2010 [Member]
Jun. 30, 2011
Plan 2010 [Member]
Jun. 30, 2012
Directors Plan 2010 [Member]
Jun. 30, 2011
Directors Plan 2010 [Member]
Jun. 30, 2012
Directors Plan 2010 [Member]
Jun. 30, 2011
Directors Plan 2010 [Member]
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