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v3.23.1

Borrowing Arrangements (Narrative) (Details) - USD ($) $ in Millions |  | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Apr. 05, 2023 | Jun. 30, 2021 | Mar. 31, 2023 | Mar. 31, 2022 | Sep. 30, 2021 | Jun. 12, 2018
Outstanding letter of credit accrued fees and expenses |  |  | $ 0.1 |  |  |
Cash and cash equivalents |  |  |  | $ 164.1 | $ 227.5 |
Future maturities of outstanding borrowings |  |  |  |  |  |
Outstanding letters of credit |  |  | 12.4 |  |  |
Domestic Line of Credit [Member] |  |  |  |  |  |
Revolving credit facility amount |  |  | (175.0) |  |  |
Future maturities of outstanding borrowings |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | 175.0 |  |  |
Potential increase size of the credit facility by an additional amount |  |  | $ 150.0 |  |  |
Line of Credit Facility, Borrowing Base, Percentage of Eligible Accounts Receivable |  |  | 85.00% |  |  |
Line of Credit Facility, Borrowing Base, Percentage of Eligible Inventory |  |  | 70.00% |  |  |
Line of Credit Facility, Borrowing Base, Percentage of Net Orderly Liquidation Value of Eligible Inventory |  |  | 85.00% |  |  |
Line of Credit Facility, Covenant, Percent of Loan Cap |  |  | 10.00% |  |  |
Unsecured Debt [Member] |  |  |  |  |  |
Long-term Debt, Gross |  |  |  |  |  | $ 450.0
Future maturities of outstanding borrowings |  |  |  |  |  |
Payments of debt issuance costs |  | $ 5.5 |  |  |  |
Swing Line Loans [Member] |  |  |  |  |  |
Revolving credit facility amount |  |  | $ (25.0) |  |  |
Future maturities of outstanding borrowings |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | 25.0 |  |  |
Letters Of Credit Outstanding [Member] |  |  |  |  |  |
Revolving credit facility amount |  |  | (60.0) |  |  |
Future maturities of outstanding borrowings |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | $ 60.0 |  |  |
5.5% Senior Notes |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage |  |  | 4.00% |  |  |
Future maturities of outstanding borrowings |  |  |  |  |  |
Financial Liabilities Fair Value Disclosure |  |  | $ 407.9 |  |  |
Debt Instrument, Redemption Price, Percentage |  |  | 40.00% |  |  |
Debt Instrument, Redemption Price Upon Change In Control, Percentage |  |  | 101.00% |  |  |
Revolving Credit Facility |  |  |  |  |  |
Excess availability reduced by outstanding borrowings, outstanding letters of credit and accrued fees and expenses |  |  | $ 162.5 |  |  |
Future maturities of outstanding borrowings |  |  |  |  |  |
Aggregate commitments availability |  |  | 17.5 |  |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  | $ 162.5 |  |  |
Minimum [Member] | Domestic Line of Credit [Member] |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  | 0.375% |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Domestic Line of Credit [Member] |  |  |  |  |  |
Line of Credit Facility, Interest Rate at Period End |  |  | 2.00% |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Domestic Line of Credit [Member] |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 2.00% |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Domestic Line of Credit [Member] |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 2.25% |  |  |
Base Rate [Member] | Domestic Line of Credit [Member] |  |  |  |  |  |
Line of Credit Facility, Interest Rate at Period End |  |  | 1.00% |  |  |
Base Rate [Member] | Minimum [Member] | Domestic Line of Credit [Member] |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 1.00% |  |  |
Base Rate [Member] | Maximum [Member] | Domestic Line of Credit [Member] |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 1.25% |  |  |
Secured Overnight Financing Rate | Domestic Line of Credit [Member] | Subsequent Event [Member] |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 0.10% |  |  |  |  |

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