Condensed Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 20,641,000	$ 903,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	8,090,000	7,019,000
Amortization of interest	1,059,000	1,207,000
Amortization of core premiums paid to customers	4,269,000	3,543,000
Noncash lease expense	5,239,000	3,977,000
(Gain) loss due to the change in the fair value of the contingent consideration	(45,000)	419,000
Foreign exchange impact of lease liabilities and forward contracts	(21,257,000)	(2,507,000)
Gain on short-term investments	(398,000)	(264,000)
Net provision for inventory reserves	8,937,000	10,104,000
Net provision for customer payment discrepancies and credit losses	242,000	1,858,000
Deferred income taxes	2,866,000	1,104,000
Share-based compensation expense	3,759,000	3,112,000
Loss on disposal of plant and equipment	9,000	1,000
Changes in operating assets and liabilities:
Accounts receivable	47,066,000	1,353,000
Inventory	(68,723,000)	(32,185,000)
Prepaid expenses and other current assets	982,000	(2,125,000)
Other assets	1,067,000	399,000
Accounts payable and accrued liabilities	46,198,000	(11,405,000)
Customer finished goods returns accrual	8,844,000	2,602,000
Contract assets, net	(18,126,000)	(6,658,000)
Contract liabilities, net	28,492,000	16,275,000
Operating lease liabilities	(4,710,000)	(3,402,000)
Other liabilities	(2,017,000)	260,000
Net cash provided by (used in) operating activities	72,484,000	(4,410,000)
Cash flows from investing activities:
Purchase of plant and equipment	(12,043,000)	(10,846,000)
Proceeds from sale of plant and equipment	7,000	41,000
Change in short-term investments	(259,000)	1,155,000
Net cash used in investing activities	(12,295,000)	(9,650,000)
Cash flows from financing activities:
Borrowings under revolving loan	0	48,000,000
Repayments of revolving loan	(93,000,000)	(28,400,000)
Repayments of term loan	(2,813,000)	(2,813,000)
Payments for debt issuance costs	0	(973,000)
Payments on finance lease obligations	(1,775,000)	(1,641,000)
Exercise of stock options	205,000	435,000
Cash used to net share settle equity awards	(351,000)	(1,062,000)
Net cash (used in) provided by financing activities	(97,734,000)	13,546,000
Effect of exchange rate changes on cash and cash equivalents	729,000	61,000
Net decrease in cash and cash equivalents	(36,816,000)	(453,000)
Cash and cash equivalents - Beginning of period	49,616,000	9,911,000
Cash and cash equivalents - End of period	12,800,000	9,458,000
Supplemental disclosures of cash flow information:
Cash paid for interest, net	11,222,000	18,375,000
Cash paid for income taxes, net of refunds	2,048,000	0
Cash paid for operating leases	8,087,000	5,906,000
Cash paid for finance leases	2,049,000	1,855,000
Plant and equipment acquired under finance leases	3,334,000	2,385,000
Assets acquired under operating leases	15,630,000	17,295,000
Non-cash capital expenditures	$ 923,000	$ 0