Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating activities:
Net income (loss)	$ (2,969)	$ 18,579
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation and amortization	7,081	7,403
Deferred income taxes and related valuation allowance	(1,500)	415
Net loss (gain) on sale of real estate, investments and other	(494)	(268)
Stock based compensation	2,071	1,556
Amortization of deferred financing costs	665	665
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	0	169
Other Operating Activities, Cash Flow Statement	1,876	1,952
Changes in operating assets and liabilities, net of effects of business acquisitions and divestitures:
Trade accounts receivable	27,955	(5,827)
Inventories	3,924	(3,879)
Prepaid expenses and other	(2,766)	(1,755)
Other assets	(39)	107
Trade accounts payable	(18,248)	(6,800)
Increase (Decrease) in Accrued Liabilities	(7,926)	(6,322)
Non-current liabilities	(2,836)	(8,155)
Net cash provided by (used for) operating activities	9,516	(2,160)
INVESTING ACTIVITIES:
Proceeds from sales of marketable securities	1,034	636
Purchases of marketable securities	(880)	(1,039)
Payments for (Proceeds from) Businesses and Interest in Affiliates	0
Proceeds from Divestiture of Businesses		(214)
Net cash provided by (used for) investing activities	5,429	(2,420)
FINANCING ACTIVITIES:
Proceeds from the issuance of common stock	185	980
Repayment of debt	(1,112)	(10,000)
Payments of Dividends	(1,427)	(1,404)
Other	(927)	(518)
Net cash provided by (used for) financing activities	21,719	(10,942)
Effect of exchange rate changes on cash	1,122	145
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	37,786	(15,377)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	152,486	55,966
Interest Paid, Excluding Capitalized Interest, Operating Activities	2,339	3,200
Supplementary cash flow data:
Income taxes paid (refunded), net	762	1,401
Restricted Cash	250	250
Pension Expense (Reversal of Expense), Noncash	2,722	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
Document Type	10-Q
Payments to Acquire Property, Plant, and Equipment	$ (1,088)	1,854
Subsequent Event [Member]
Proceeds from Sales of Assets, Investing Activities	6,363	0
INVESTING ACTIVITIES:
Proceeds from Sales of Assets, Investing Activities	$ 6,363	$ 0