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Debt (Details 3) (USD $) | 3 Months Ended |  | 0 Months Ended |  |  |  | 3 Months Ended | 0 Months Ended | 3 Months Ended |  | 3 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
May 31, 2014 | Feb. 28, 2014 | Mar. 01, 2014 Unsecured state industrial development loan | May 31, 2014 Unsecured state industrial development loan | Mar. 31, 2014 Unsecured state industrial development loan | Feb. 28, 2014 Unsecured state industrial development loan | May 31, 2014 Unsecured state industrial development loan Base Rate | May 31, 2014 Unsecured state industrial development loan Base Rate Maximum | May 31, 2014 Unsecured state industrial development loan LIBOR | May 31, 2014 Unsecured state industrial development loan LIBOR Maximum | Jun. 30, 2014 Unsecured floating interest rate 10 year Senior Notes | May 31, 2014 Unsecured floating interest rate 10 year Senior Notes | Feb. 28, 2014 Unsecured floating interest rate 10 year Senior Notes | May 31, 2014 3.90% unsecured Senior Notes payable | Feb. 28, 2014 3.90% unsecured Senior Notes payable
Long-term debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Face amount |  |  |  | $ 37,610,000 | $ 37,610,000 |  |  |  |  |  |  | $ 75,000,000 |  | $ 100,000,000 |
Basis spread on variable rate (as percent) |  |  |  |  |  |  |  | 1.125% |  | 2.125% |  | 0.90% |  |  |
Variable Rate Basis |  |  |  |  |  |  | Base rate |  | LIBOR |  |  | three-month LIBOR |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.90% |
Interest rate (as a percent) |  |  |  | 1.90% |  |  |  |  |  |  |  | 6.01% |  | 3.90% |
Frequency of principal payment |  |  |  |  |  |  |  |  |  |  |  |  |  | Annual |
Principal payments |  |  |  |  |  |  |  |  |  |  |  |  |  | 20,000,000 |
Total long-term debt | 190,707,000 | 192,607,000 |  | 35,707,000 |  | 37,607,000 |  |  |  |  |  | 75,000,000 | 75,000,000 | 80,000,000 | 80,000,000
Less current maturities of long-term debt | (96,900,000) | (96,900,000) |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, excluding current maturities | 93,807,000 | 95,707,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Repayment of principal | $ 1,900,000 |  | $ 1,900,000 |  |  |  |  |  |  |  | $ 75,000,000 |  |  |  |

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