Accounts Receivable and Inventories (Tables)

12 Months Ended

Dec. 31, 2018

Accounts Receivable and Inventories [Abstract]

Schedule of accounts receivable

Accounts receivable consist of the following:

(In thousands)	December 31 2018			December 31 2017
Trade accounts receivable	$	295,847		$	292,765
Less: Allowance for doubtful accounts	(4,634		)	(4,731		)
Trade accounts receivable, net	$	291,213		$	288,034
Other receivables (a) (b)	$	54,182		$	20,224

(a)

Other receivables include insurance claim receivables, employee receivables, tax claim receivables and other miscellaneous receivables not included in Trade accounts receivable, ne

Schedule of provision for doubtful accounts related to trade accounts receivable

The provision (benefit) for doubtful accounts related to trade accounts receivable was as follows:

	Years Ended December 31
(In thousands)	2018		2017		2016
Provision (benefit) for doubtful accounts related to trade accounts receivable	$	372	$	5,346	$	(38	)

Schedule of inventories

Inventories consist of the following:

(In thousands)	December 31 2018		December 31 2017
Finished goods	$	17,223	$	26,415
Work-in-process	21,787		24,367
Contracts-in-process (c)	—		45,599
Raw materials and purchased parts	72,194		58,943
Stores and supplies	21,907		22,969
Total inventories	$	133,111	$	178,293
Valued at lower of cost or market:
LIFO basis	$	80,590	$	80,644
FIFO basis	8,611		52,832
Average cost basis	43,910		44,817
Total inventories	$	133,111	$	178,293

Schedule of contracts in process

Contracts-in-process consist of the following:

(In thousands)	December 31 2017
Contract costs accumulated to date	$	73,740
Estimated forward loss provisions for contracts-in-process (d)	(28,141		)
Contracts-in-process (c)(e)	$	45,599