Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cash Flows from Operating Activities
Net income	$ 79,573	$ 69,648
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	52,912	55,793
Deferred income taxes	2,316	(12,738)
Loss on disposal of assets and costs from exit and disposal activities	1,572	10,468
ESOP and stock-based compensation	16,142	13,086
Amortization of deferred financing charges	561	746
Fair market value adjustments to derivatives	1,976	(1,988)
Equity in net loss (income) of unconsolidated affiliates	225	(496)
Other operating activities	(3,493)	12,046
Changes in working capital:
Receivables	16,768	(14,817)
Inventories	15,705	44,560
Prepaid expenses and other current assets	(2,562)	2,105
Accounts payable, accrued expenses, and other liabilities	(33,673)	(39,504)
Net cash provided by operating activities	148,022	138,909
Cash Flows from Investing Activities
Capital expenditures	(31,130)	(35,124)
Cash paid for acquisitions, net of cash acquired		(1,990)
Proceeds from sale of corporate-owned life insurance		5,959
Other investing activities	1,109	(570)
Net cash used in investing activities	(30,021)	(31,725)
Cash Flows from Financing Activities
Proceeds from Revolving Credit Facility	331,600	397,450
Payments on Revolving Credit Facility	(376,600)	(431,950)
Payments on Term Loan		(72,500)
Proceeds from Senior Notes		75,000
Payments on Senior Notes	(25,000)	(25,000)
Debt issuance costs		(2,268)
Payments of notes, mortgages and other debt	(700)	(1,675)
Payments on capital lease obligations	(17,791)	(18,176)
Acquisition of noncontrolling interest in BaySaver	(8,821)
Cash dividends paid	(21,084)	(13,511)
Proceeds from exercise of stock options	3,937	7,606
Repurchase of common stock		(7,947)
Other financing activities	(920)	(1,558)
Net cash used in financing activities	(115,379)	(94,529)
Effect of exchange rate changes on cash	(451)	(698)
Net change in cash	2,171	11,957
Cash at beginning of period	17,587	6,450
Cash at end of period	19,758	18,407
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for income taxes	27,459	25,408
Cash paid for interest	11,506	13,904
Non-cash operating, investing and financing activities:
Acquisition of property, plant and equipment under capital lease and incurred lease obligations	19,915	25,993
Balance in accounts payable for the acquisition of property, plant and equipment	$ 2,381	998
Payable recorded for business acquisition		300
Contribution of net accounts receivable to the South American Joint Venture		$ 2,785