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LONG-TERM DEBT (Details) (USD $) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jan. 31, 2012 | Dec. 31, 2012 acre | Dec. 31, 2011
Long-Term Debt |  |  |
Long-term debt |  | $ 49,268,000 | $ 45,521,000
Less current portion |  | 4,068,000 |
Long-term debt |  | 45,200,000 | 45,521,000
Minimum |  |  |
Long-Term Debt |  |  |
Required liquidity under financial covenants |  | 4,000,000 |
Maximum |  |  |
Long-Term Debt |  |  |
Required total liabilities under financial covenants |  | 175,000,000 |
Wells Fargo revolving loans |  |  |
Long-Term Debt |  |  |
Long-term debt |  | 25,200,000 | 21,100,000
Interest rate (as a percent) |  | 4.05% | 4.12%
Maximum borrowing capacity |  | 34,500,000 |
Variable rate basis |  | LIBOR |
Interest rate margin (as a percent) |  | 3.80% |
Area of the company's real estate pledged as collateral (in acres) |  | 880 |
Available borrowing capacity |  | 8,800,000 |
Irrevocable letters of credit |  | 500,000 |
Wells Fargo revolving loans | Minimum |  |  |
Long-Term Debt |  |  |
Required liquidity under financial covenants |  | 4,000,000 |
Wells Fargo revolving loans | Maximum |  |  |
Long-Term Debt |  |  |
Required total liabilities under financial covenants |  | 175,000,000 |
American AgCredit term loan, 5.25% |  |  |
Long-Term Debt |  |  |
Long-term debt |  | 24,068,000 | 24,421,000
Interest rate (as a percent) |  | 5.25% | 5.25%
Variable rate basis |  | 30-day LIBOR |
Interest rate margin (as a percent) |  | 4.25% |
Area of the company's real estate pledged as collateral (in acres) |  | 3,100 |
Interest rate, variable interest rate floor (as a percent) |  | 1.00% |
Mandatory principal repayment |  | 4,100,000 |
Mandatory principal prepayment as percentage of the net proceeds of the sale of any real property pledged as collateral |  | 100.00% |
Repayment of principal | 353,000 |  |
Sale of non-collateralized real estate parcel | 1,500,000 |  |
American AgCredit term loan, 5.25% | Minimum |  |  |
Long-Term Debt |  |  |
Required liquidity under financial covenants |  | 4,000,000 |
Mandatory principal prepayment as percentage of the net proceeds of the sale of non collateralized real property |  | 10.00% |
American AgCredit term loan, 5.25% | Maximum |  |  |
Long-Term Debt |  |  |
Required total liabilities under financial covenants |  | $ 175,000,000 |
Applicable spread after tiered reduction (as a percent) |  | 0.0375 |
Mandatory principal prepayment as percentage of the net proceeds of the sale of non collateralized real property |  | 75.00% |

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