Consolidated Statements Of Cash Flows - USD ($) $ in Thousands		6 Months Ended
		Sep. 30, 2015	Sep. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income		$ 18,939	$ 16,009
Adjustments to reconcile net income to net cash used by operating activities:
Depreciation		18,362	17,298
Amortization		446	816
Net provision for losses (recoveries) on advances and guaranteed loans to suppliers		(4,354)	(2,497)
Foreign currency remeasurement loss (gain), net		21,981	7,156
Restructuring and impairment costs	[1]	2,389	3,350
Other, net		481	(9,470)
Changes in operating assets and liabilities, net		(202,046)	(386,404)
Net cash used by operating activities		(143,802)	(353,742)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property, plant and equipment		(28,457)	(30,571)
Proceeds from sale of property, plant and equipment		1,155	983
Net cash used by investing activities		(27,302)	(29,588)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance (repayment) of short-term debt, net		23,826	297,507
Repayment of long-term obligations		0	(7,500)
Dividends paid to noncontrolling interests		(1,260)	(1,977)
Issuance of common stock		0	187
Repurchase of common stock		0	(7,202)
Dividends paid on convertible perpetual preferred stock		(7,374)	(7,425)
Dividends paid on common stock		(23,536)	(23,661)
Net cash provided (used) by financing activities		(8,344)	249,929
Effect of exchange rate changes on cash		(365)	(564)
Net decrease in cash and cash equivalents		(179,813)	(133,965)
Cash and cash equivalents at beginning of year		248,783	163,532
Cash and cash equivalents at end of period		$ 68,970	$ 29,567

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