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Commitments and Contingencies (Details 1) (USD $) | Mar. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
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Future minimum payments under all leases and bonds payable |  |  |
Total minimum lease payments, Operating Leases | $ 3,500,000 |  |
Less current maturities, Bonds Payable |  | 206,250 | 191,250
Less current maturities, Capital Leases |  | 6,888 | 17,979
Bonds payable, non-current |  | 125,000 | 331,250
Bonds Payable [Member] |  |  |
Future minimum payments under all leases and bonds payable |  |  |
Bonds Payable, 2013 |  | 237,592 |
Bonds Payable, 2014 |  | 136,852 |
Total minimum lease payments, Bonds Payable |  | 374,444 |
Less amounts representing interest, Bonds Payable |  | 43,194 |
Present value of bonds payable and capital lease payments, Bonds Payable |  | 331,250 |
Less current maturities, Bonds Payable |  | 206,250 |
Bonds payable, non-current |  | 125,000 |
Capital Lease [Member] |  |  |
Future minimum payments under all leases and bonds payable |  |  |
Capital Leases, 2013 |  | 8,078 |
Capital Leases, 2014 |  | 8,078 |
Capital Leases, 2015 |  | 5,385 |
Total minimum lease payments, Capital Leases |  | 21,541 |
Less amounts representing interest, Capital Leases |  | 2,007 |
Present value of bonds payable and capital lease payments, Capital Leases |  | 19,534 |
Less current maturities, Capital Leases |  | 6,888 |
Capital Leases, Less current maturities |  | 12,646 |
Operating Leases [Member] |  |  |
Future minimum payments under all leases and bonds payable |  |  |
Operating Leases, 2013 |  | 2,538,660 |
Operating Leases, 2014 |  | 1,529,890 |
Operating Leases, 2015 |  | 1,581,352 |
Operating Leases, 2016 |  | 1,627,668 |
Operating Leases, 2017 |  | 1,663,691 |
Operating Leases, Thereafter |  | 8,236,198 |
Total minimum lease payments, Operating Leases |  | 17,177,459 |
Sublease Income [Member] |  |  |
Future minimum payments under all leases and bonds payable |  |  |
Sublease Income, 2013 |  | 61,356 |
Total minimum lease payments, Sublease Income |  | $ 61,356 |

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