Derivative Instruments |
6 Months Ended |
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Aug. 31, 2026 | |
| Derivative Instruments and Hedging Activities Disclosure [Abstract] | |
| Derivative Instruments | 9. Derivative Instruments Interest Rate Swap Derivative As a policy, we do not hold, issue, or trade derivative instruments for speculative purposes. We periodically enter into forward contracts to purchase a specified volume of zinc and natural gas at fixed prices. These contracts are not accounted for as derivatives because they meet the criteria for the normal purchases and normal sales scope exception in ASC 815, Derivatives and Hedging. We manage our exposure to fluctuations in interest rates on our floating-rate debt by entering into interest rate swap agreements to convert a portion of our variable-rate debt to a fixed rate. On June 30, 2025, we entered into a fixed-rate interest rate swap agreement (the "2025 Swap"). The 2025 Swap converts the SOFR-based component of the interest rate to 3.759%. As of August 31, 2026, the 2025 Swap resulted in a total fixed rate of 5.509%. The 2025 Swap has a notional amount of $290.0 million and a maturity date of June 30, 2027. The objective of the 2025 Swap is to eliminate the variability of cash flows in interest payments attributable to changes in benchmark one-month SOFR interest rates. The hedged risk is the interest rate risk exposure to changes in interest payments, attributable to changes in benchmark one-month SOFR interest rates over the interest rate swap term. The changes in cash flows of the interest rate swap are expected to exactly offset changes in cash flows of the variable-rate debt. We designated the 2025 Swap as a cash flow hedge at inception. Cash settlements, in the form of cash payments or cash receipts, of the 2025 Swap are recognized in "Interest expense, net" in the consolidated statement of operations. At August 31, 2026, changes in fair value attributable to the effective portion of the 2025 Swap were included on the consolidated balance sheets in "Accumulated other comprehensive loss." For derivative instruments that qualify for hedge accounting treatment, the fair value is recognized on our consolidated balance sheets as derivative assets or liabilities with offsetting changes in fair value recognized in accumulated other comprehensive income (loss) until reclassified into earnings when the related interest expense is recognized. During the six months ended August 31, 2026, we reclassified $0.14 million before income tax, or $0.11 million net of tax, from accumulated other comprehensive income to earnings for the 2025 Swap.
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