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- Definition

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

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Amount, before allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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No definition available.

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer.

+ References

No definition available.

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Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended
Revenue Recognition (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Sep. 30, 2020
Revenue Recognition and Deferred Revenue [Abstract]
Capitalized Contract Cost, Net	$ 96
Unbilled Receivables, Current	10,392
Costs and estimated earnings in excess of billings	23,836		$ 29,937
Billings in excess of costs and estimated earnings	(64,731)		$ (55,739)
Contract with Customer, Liability, Revenue Recognized	25,225	$ 19,550
Performance Obligation Next 12 Months	443,580
Revenue, Remaining Performance Obligation, Amount	525,141
Disaggregation of Revenue [Line Items]
Revenues	314,838	276,043
Contract with Customer, Liability, Revenue Recognized	25,225	19,550
Commercial and Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenues	62,590	67,743
Communications [Member]
Disaggregation of Revenue [Line Items]
Revenues	98,356	84,289
Infrastructure Solutions [Member]
Disaggregation of Revenue [Line Items]
Revenues	34,401	31,283
Residential [Member]
Disaggregation of Revenue [Line Items]
Revenues	119,491	92,728
Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Revenues	288,856	248,081
Fixed-price Contract [Member] \| Commercial and Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenues	60,687	63,835
Fixed-price Contract [Member] \| Communications [Member]
Disaggregation of Revenue [Line Items]
Revenues	76,014	62,027
Fixed-price Contract [Member] \| Infrastructure Solutions [Member]
Disaggregation of Revenue [Line Items]
Revenues	32,664	29,491
Fixed-price Contract [Member] \| Residential [Member]
Disaggregation of Revenue [Line Items]
Revenues	119,491	92,728
Time-and-materials Contract [Member]
Disaggregation of Revenue [Line Items]
Revenues	25,982	27,962
Time-and-materials Contract [Member] \| Commercial and Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,903	3,908
Time-and-materials Contract [Member] \| Communications [Member]
Disaggregation of Revenue [Line Items]
Revenues	22,342	22,262
Time-and-materials Contract [Member] \| Infrastructure Solutions [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,737	1,792
Time-and-materials Contract [Member] \| Residential [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0
industrial Services [Member] \| Infrastructure Solutions [Member]
Disaggregation of Revenue [Line Items]
Revenues	10,040	11,111
Custom Power Solutions [Member] \| Infrastructure Solutions [Member]
Disaggregation of Revenue [Line Items]
Revenues	24,361	20,172
Single Family Contracts [Member] \| Residential [Member]
Disaggregation of Revenue [Line Items]
Revenues	72,126	54,874
Multi Family and Other [Member] \| Residential [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 47,365	$ 37,854