Accounts Receivable	6 Months Ended
Mar. 31, 2019
Receivables [Abstract]
Accounts Receivable	4.Accounts Receivable Accounts receivable of $353,090 and $317,056, is net of an allowance for doubtful accounts of $6,566 and $5,629 and includes amounts of retention on incomplete projects to be completed within one year of $39,322 and $40,215 at March 31, 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

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