Construction Partners, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Cover Page
Financial Statements
Notes to Financial Statements
Accounting Policies
- Significant Accounting Policies (Policies)
Notes Tables
Notes Details
Uncategorized
- Uncategorized Items - road-20210331.htm

Related Parties - Additional Information (Details)

v3.21.1

Related Parties - Additional Information (Details) - USD ($)	3 Months Ended	6 Months Ended
	Dec. 31, 2017	Mar. 31, 2021	Mar. 31, 2018
Affiliated Entity
Related Party Transaction [Line Items]
Debt instrument, face amount		$ 800,000
Interest rate, percentage		4.00%
Annual principal payment		$ 100,000
Affiliated Entity \| Class B Common Stock
Related Party Transaction [Line Items]
Shares pledged as collateral (in shares)	140,389	30,000
Affiliated Entity \| Class A Common Stock
Related Party Transaction [Line Items]
Shares pledged as collateral (in shares)		7,500
SunTx Capital Partners \| Affiliated Entity
Related Party Transaction [Line Items]
Payment to related party		$ 270,000
Consideration Note Receivable
Related Party Transaction [Line Items]
Note receivable as consideration for sale of the wholly-owned subsidiary			$ 1,000,000.0
Accounts Payable Note Receivable
Related Party Transaction [Line Items]
Note receivable as consideration for sale of the wholly-owned subsidiary			$ 1,000,000.0
Other Current Assets \| Consideration Note Receivable
Related Party Transaction [Line Items]
Note receivable as consideration for sale of the wholly-owned subsidiary		100,000
Other Current Assets \| Accounts Payable Note Receivable
Related Party Transaction [Line Items]
Note receivable as consideration for sale of the wholly-owned subsidiary		100,000
Other Assets \| Consideration Note Receivable
Related Party Transaction [Line Items]
Note receivable as consideration for sale of the wholly-owned subsidiary		500,000
Other Assets \| Accounts Payable Note Receivable
Related Party Transaction [Line Items]
Note receivable as consideration for sale of the wholly-owned subsidiary		$ 300,000

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