Construction Partners, Inc. Annual report pursuant to Section 13 and 15(d)

Investment in Derivative Instruments - Realized and Unrealized Gains (Losses) (Details)

Investment in Derivative Instruments - Realized and Unrealized Gains (Losses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized Gain (Loss)	$ 6,042	$ 2,666	$ (60)
Unrealized Gain (Loss)	(342)	382	3,209
Total Gain (Loss)	5,700	3,048	3,149
Cost of revenues
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized Gain (Loss)	(2,255)	3,472	830
Unrealized Gain (Loss)	(342)	(1,286)	2,315
Total Gain (Loss)	(2,597)	2,186	3,145
Interest expense, net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized Gain (Loss)	8,297	(806)	(890)
Unrealized Gain (Loss)	0	1,668	894
Total Gain (Loss)	$ 8,297	$ 862	$ 4

- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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