Alabama State Industrial Development Authority Financing and Economic Incentives	12 Months Ended
Dec. 31, 2019
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Alabama State Industrial Development Authority Financing and Economic Incentives	Note 12 – Alabama State Industrial Development Authority Financing and Economic Incentives In conjunction with the 1995 expansion of our Huntsville, Alabama facility, we were approved for participation in an incentive program offered by the State of Alabama Industrial Development Authority (“the Authority”). Pursuant to the program, on January 13, 1995, the Authority issued $20.0 million of its taxable revenue bonds (the “Taxable Revenue Bonds”) and loaned the proceeds from the sale of the Taxable Revenue Bonds to ADTRAN. Further advances on the Taxable Revenue Bonds were made by the Authority, bringing the total amount outstanding to $50.0 million. The Taxable Revenue Bonds bore interest, payable monthly with an interest rate of 2% per annum. The Taxable Revenue Bond’s outstanding aggregate principal amount of $24.6 million matured on January 1, 2020 and was repaid in full on January 2, 2020. The fair value of the bond as of December 31, 2019 was $24.6 million. We are required to make payments to the Authority in amounts necessary to pay the interest on the Taxable Revenue Bonds. Included in short-term investments as of December 31, 2019 is $25.6 million which is invested in a certificate of deposit. These funds serve as a collateral deposit against the principal of this bond, and we have the right to set-off the balance of the Taxable Revenue Bonds with the collateral deposit in order to reduce the balance of the indebtedness. In conjunction with this program, we were eligible to receive certain economic incentives from the state of Alabama that reduce the amount of payroll withholdings that we were required to remit to the state for those employment positions that qualify under the program. We realized economic incentives related to payroll withholdings totaling $1.2 million, $1.4 million and $1.5 million for the years ended December 31, 2019, 2018 and 2017, respectively. This program concluded on January 2, 2020 following the maturity of the Taxable Revenue Bonds. No additional benefits will be received in future periods. We made principal payments of $1.0 million and $1.1 million for the years ended December 31, 2019 and 2018. No additional principal payments will be made in future periods.

Alabama State Industrial Development Authority Financing and Economic Incentives

12 Months Ended

Dec. 31, 2019

Alabama State Industrial Development Authority Financing and Economic Incentives

Note 12 – Alabama State Industrial Development Authority Financing and Economic Incentives

In conjunction with the 1995 expansion of our Huntsville, Alabama facility, we were approved for participation in an incentive program offered by the State of Alabama Industrial Development Authority (“the Authority”). Pursuant to the program, on January 13, 1995, the Authority issued $20.0 million of its taxable revenue bonds (the “Taxable Revenue Bonds”) and loaned the proceeds from the sale of the Taxable Revenue Bonds to ADTRAN. Further advances on the Taxable Revenue Bonds were made by the Authority, bringing the total amount outstanding to $50.0 million. The Taxable Revenue Bonds bore interest, payable monthly with an interest rate of 2% per annum. The Taxable Revenue Bond’s outstanding aggregate principal amount of $24.6 million matured on January 1, 2020 and was repaid in full on January 2, 2020. The fair value of the bond as of December 31, 2019 was $24.6 million. We are required to make payments to the Authority in amounts necessary to pay the interest on the Taxable Revenue Bonds. Included in short-term investments as of December 31, 2019 is $25.6 million which is invested in a certificate of deposit. These funds serve as a collateral deposit against the principal of this bond, and we have the right to set-off the balance of the Taxable Revenue Bonds with the collateral deposit in order to reduce the balance of the indebtedness.

In conjunction with this program, we were eligible to receive certain economic incentives from the state of Alabama that reduce the amount of payroll withholdings that we were required to remit to the state for those employment positions that qualify under the program. We realized economic incentives related to payroll withholdings totaling $1.2 million, $1.4 million and $1.5 million for the years ended December 31, 2019, 2018 and 2017, respectively. This program concluded on January 2, 2020 following the maturity of the Taxable Revenue Bonds. No additional benefits will be received in future periods.

We made principal payments of $1.0 million and $1.1 million for the years ended December 31, 2019 and 2018. No additional principal payments will be made in future periods.