Condensed Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 861,000	$ (3,012,000)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Depreciation and amortization	3,145,000	2,551,000
Amortization of interest	414,000	312,000
Amortization of core premiums paid to customers	2,531,000	1,223,000
Amortization of finished goods premiums paid to customers	146,000	0
Noncash lease expense	1,791,000	1,686,000
Gain due to the change in the fair value of the contingent consideration	(60,000)	(47,000)
Foreign exchange impact of lease liabilities and forward contracts	(2,533,000)	(4,817,000)
Gain on short-term investments	(5,000)	(155,000)
Net provision for inventory reserves	3,141,000	2,074,000
Net provision for customer payment discrepancies and credit losses	229,000	30,000
Deferred income taxes	358,000	465,000
Share-based compensation expense	1,576,000	1,043,000
Loss on disposal of plant and equipment	33,000	0
Change in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	9,020,000	25,847,000
Inventory	(20,625,000)	(8,034,000)
Prepaid expenses and other current assets	281,000	(2,898,000)
Other assets	297,000	219,000
Accounts payable and accrued liabilities	(10,183,000)	6,478,000
Customer finished goods returns accrual	3,698,000	1,621,000
Contract assets, net	(24,857,000)	(6,076,000)
Contract liabilities, net	27,880,000	4,620,000
Operating lease liabilities	(1,259,000)	(1,416,000)
Other liabilities	(618,000)	674,000
Net cash (used in) provided by operating activities	(4,739,000)	22,388,000
Cash flows from investing activities:
Purchase of plant and equipment	(1,922,000)	(2,983,000)
Change in short-term investments	(167,000)	(55,000)
Net cash used in investing activities	(2,089,000)	(3,038,000)
Cash flows from financing activities:
Borrowings under revolving loan	32,000,000	0
Repayments of revolving loan	(13,000,000)	(40,000,000)
Repayments of term loan	(938,000)	(938,000)
Payments for debt issuance costs	(1,102,000)	0
Payments on finance lease obligations	(678,000)	(549,000)
Exercise of stock options	354,000	20,000
Cash used to net share settle equity awards	(542,000)	(207,000)
Net cash provided by (used in) financing activities	16,094,000	(41,674,000)
Effect of exchange rate changes on cash and cash equivalents	94,000	172,000
Net increase (decrease) in cash and cash equivalents	9,360,000	(22,152,000)
Cash and cash equivalents - Beginning of year	15,523,000	49,616,000
Cash and cash equivalents - End of year	24,883,000	27,464,000
Supplemental disclosures of cash flow information:
Cash paid for interest, net	3,521,000	4,234,000
Cash paid for income taxes, net of refunds	1,550,000	447,000
Cash paid for operating leases	2,472,000	2,574,000
Cash paid for finance leases	775,000	632,000
Plant and equipment acquired under finance leases	230,000	1,427,000
Assets acquired under operating leases	15,718,000	15,564,000
Non-cash capital expenditures	$ 206,000	$ 678,000