Summary of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2018

Schedule Of Estimated Useful Lives For Major Classes Of Depreciable Assets

Estimated useful lives for major classes of depreciable assets are as follows:



Asset Class	Estimated Useful Life
Machinery and equipment	3 to 20 years
Buildings and improvements	10 to 40 years

Property, plant, and equipment consists of the following:



	September 30, 2018			September 30, 2017
Machinery and equipment	$	399,619		$	338,056
Land and buildings	76,459			84,282
Construction in process	60,803			24,788
	536,881			447,126
Less: accumulated depreciation	(216,858		)	(167,083		)
	$	320,023		$	280,043

Depreciation expense and maintenance and repairs expense for the years ended September 30, 2018, 2017 and 2016 were as follows:



	Year Ended September 30,
	2018		2017		2016
Depreciation expense	$	59,017	$	53,327	$	51,104
Maintenance and repair expense	23,343		21,392		22,504

Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net

The Company has not provided additional financial support to this entity which it is not contractually required to provide, and the Company does not have the ability to use the assets of TWO to settle obligations of the Company’s other subsidiaries. The following provides a summary of TWO’s balance sheet as of September 30, 2018 and 2017, and summarized financial information for the years ended September 30, 2018, 2017 and 2016.



	September 30, 2018			September 30, 2017
Current assets (includes cash of $3,304 and $1,907)	$	5,486		$	12,006
Property, plant and equipment	4,441			6,107
Goodwill	2,206			2,206
Other non-current assets	3			2,735
Total liabilities	(3,608		)	(12,781		)



	Year Ended September 30,
	2018			2017			2016
Total revenues	$	15,526		$	22,039		$	16,351
Total operating expenses	(12,996		)	(14,835		)	(13,384		)
Income from operations	$	2,530		$	7,204		$	2,967