Consolidated Statements Of Cash Flows - USD ($) $ in Thousands		3 Months Ended
		Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)		$ (6,125)	$ 525
Adjustments to reconcile net income (loss) to net cash used by operating activities:
Depreciation		9,145	8,653
Amortization		223	409
Net provision for losses (recoveries) on advances and guaranteed loans to suppliers		(2,037)	(516)
Foreign currency remeasurement loss (gain), net		2,806	(1,283)
Restructuring and impairment costs	[1]	2,389	0
Other, net		8,457	(4,395)
Changes in operating assets and liabilities, net		(129,793)	(118,286)
Net cash used by operating activities		(114,935)	(114,893)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property, plant and equipment		(14,900)	(16,808)
Proceeds from sale of property, plant and equipment		613	393
Net cash used by investing activities		(14,287)	(16,415)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance (repayment) of short-term debt, net		26,306	142,489
Repayment of long-term obligations		0	(3,750)
Issuance of common stock		0	187
Repurchase of common stock		0	(7,202)
Dividends paid on convertible perpetual preferred stock		(3,687)	(3,712)
Dividends paid on common stock		(11,749)	(11,844)
Net cash provided by financing activities		10,870	116,168
Effect of exchange rate changes on cash		8	65
Net decrease in cash and cash equivalents		(118,344)	(15,075)
Cash and cash equivalents at beginning of year		248,783	163,532
Cash and cash equivalents at end of period		$ 130,439	$ 148,457

[1] Restructuring and impairment costs are excluded from segment operating income (loss), but are included in consolidated operating income (loss) in the consolidated statements of income and comprehensive income.