Accounts Receivable	9 Months Ended
Jun. 30, 2019
Receivables [Abstract]
Accounts Receivable	4.Accounts Receivable Accounts receivable of $346,833 and $317,056, is net of an allowance for doubtful accounts of $5,482 and $5,629 and includes amounts of retention on incomplete projects to be completed within one year of $38,755 and $40,215 at June 30, 2019 and September 30, 2018, respectively.

The entire disclosure for financing receivables. Examples of financing receivables include, but are not limited to, loans, trade accounts receivables, notes receivable, credit cards, and receivables relating to a lessor's right(s) to payment(s) from a lease other than an operating lease that is recognized as assets.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-URI http://asc.fasb.org/topic&trid=2196771

Name:	us-gaap_FinancingReceivablesTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration