Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Proceeds from Equity Method Investment, Distribution, Return of Capital	$ 587	$ 0
Operating activities:
Net income (loss)	(7,073)	35,178
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation and amortization	14,210	14,747
Deferred income taxes and related valuation allowance	(6,745)	748
Net loss (gain) on sale of real estate, investments and other	(557)	(446)
Stock based compensation	3,989	3,511
Amortization of deferred financing costs	1,327	1,327
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	0	176
Other Operating Activities, Cash Flow Statement	3,785	4,223
Changes in operating assets and liabilities, net of effects of business acquisitions and divestitures:
Trade accounts receivable	33,594	(2,648)
Inventories	18,987	1,400
Prepaid expenses and other	(1,627)	(2,883)
Other assets	570	(171)
Trade accounts payable	(20,078)	332
Increase (Decrease) in Accrued Liabilities	(7,895)	(8,230)
Non-current liabilities	(1,952)	(9,384)
Net cash provided by (used for) operating activities	46,943	37,880
INVESTING ACTIVITIES:
Proceeds from sales of marketable securities	1,034	1,928
Purchases of marketable securities	(1,759)	(2,581)
Payments for (Proceeds from) Businesses and Interest in Affiliates	0
Proceeds from Divestiture of Businesses		(214)
Net cash provided by (used for) investing activities	2,536	(5,659)
FINANCING ACTIVITIES:
Proceeds from the issuance of common stock	429	3,784
Repayment of debt	(2,225)	(30,000)
Payments of Dividends	(2,860)	(2,824)
Other	(982)	(544)
Net cash provided by (used for) financing activities	18,536	(29,584)
Effect of exchange rate changes on cash	4,091	(1,751)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	72,106	886
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	186,806	72,229
Interest Paid, Excluding Capitalized Interest, Operating Activities	7,438	5,926
Supplementary cash flow data:
Income taxes paid (refunded), net	1,234	2,878
Restricted Cash	250	250
Pension Expense (Reversal of Expense), Noncash	19,046	0
Gain (Loss) on Disposition of Property Plant Equipment	(2,638)	0
Proceeds from (Repayments of) Debt, Maturing in More than Three Months	25,000	0
Proceeds from Sale of Property, Plant, and Equipment	0	51
Payments to Acquire Property, Plant, and Equipment	(2,779)	4,843
Stock Issued During Period, Value, Stock Options Exercised	(826)	0
Subsequent Event [Member]
Proceeds from Sales of Assets, Investing Activities	5,453	0
INVESTING ACTIVITIES:
Proceeds from Sales of Assets, Investing Activities	$ 5,453	$ 0