SEGMENT INFORMATION (Tables)

6 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

Summary of Segment Information

The following table presents the summary segment information for the three months and six months ended September 30, 2017 and 2016:       

	Three Months Ended September 30,					Six Months Ended September 30,
	2017		2016			2017			2016
Sales and other operating revenues:
North America	$	59,331	$	58,823		$	124,618		$	108,760
Other regions	388,008		330,600			599,714			541,764
Total revenue	$	447,339	$	389,423		$	724,332		$	650,524
Operating income:
North America	$	7,772	$	3,659		$	6,123		$	2,681
Other regions	31,340		14,787			32,083			10,489
Total operating income	39,112		18,446			38,206			13,170
Debt retirement expense	—		—			(2,975		)	—
Interest expense	32,756		31,904			66,856			62,507
Interest income	727		2,204			1,694			4,042
Income (loss) before income taxes and other items	$	7,083	$	(11,254	)	$	(23,981	)	$	(45,295	)

Analysis of Segment Assets

Analysis of Segment Assets		September 30, 2017		September 30, 2016		March 31, 2017
Segment assets:
	North America	$	382,940	$	396,413	$	375,782
	Other regions	1,552,263		1,602,311		1,596,090
	Total assets	$	1,935,203	$	1,998,724	$	1,971,872