Receivables (Tables)

9 Months Ended

Jun. 30, 2018

Accounts, Notes, Loans and Financing Receivable [Line Items]

Schedule of Accounts, Notes, Loans and Financing Receivable

Receivables consist of:

	June 30, 2018			September 30, 2017
Accounts receivable	$	293,967		$	286,773
Long-term contract receivables:
Amounts billed	138,862			148,087
Unbilled recoverable costs and accrued profits	297,527			282,154
Total long-term contract receivables	436,389			430,241
Other	31,987			15,077
Total receivables	762,343			732,091
Less allowance for doubtful accounts	(4,888		)	(4,351		)
Receivables	$	757,455		$	727,740