Other Financial Statements Details (Tables)

9 Months Ended

Dec. 31, 2017

Accounts Receivable, Net [Abstract]

Accounts receivable schedule

Accounts receivable consists of the following (amounts in thousands):

	December 31, 2017		March 31, 2017
Trade accounts receivable	$	547,572	$	473,238
Other	7,682		7,219
Total accounts receivable, gross	555,254		480,457
Less allowance for doubtful accounts	2,119		2,084
Total accounts receivable, net	$	553,135	$	478,373

Components of inventories

The components of inventories consist of the following (amounts in thousands):

	December 31, 2017		March 31, 2017
Raw materials	$	22,488	$	14,430
Work in process	309,811		268,281
Finished goods	154,766		134,491
Total inventories	$	487,065	$	417,202

Schedule of property, plant and equipment

Property, plant and equipment consists of the following (amounts in thousands):

	December 31, 2017		March 31, 2017
Land	$	73,447	$	73,447
Building and building improvements	506,037		499,668
Machinery and equipment	1,911,200		1,774,920
Projects in process	115,006		104,318
Total property, plant and equipment, gross	2,605,690		2,452,353
Less accumulated depreciation and amortization	1,850,910		1,769,015
Total property, plant and equipment, net	$	754,780	$	683,338