Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2019	Mar. 31, 2019
Current assets:
Cash and cash equivalents	$ 94,897	$ 100,529
Accounts receivable, less allowance for doubtful accounts of $22 and $39, respectively	1,466	2,542
Inventories - finished goods, net	19,061	21,370
Prepaid expenses and other current assets	2,841	1,408
Prepaid income taxes		582
Total current assets	118,265	126,431
Noncurrent assets:
Property and equipment, net	26,412	27,136
Intangible assets	860	860
Total noncurrent assets	27,272	27,996
Total assets	145,537	154,427
Current liabilities:
Accounts payable	15,155	16,275
Accrued expenses and other current liabilities	2,871	2,351
Income taxes payable	525
Total current liabilities	18,551	18,626
Deferred tax liabilities	1,395	1,121
Total liabilities	19,946	19,747
Commitments and contingencies
Shareholders' equity:
Preferred stock, $.001 par value, 5,000 shares authorized; 3 convertible shares issued and outstanding with a liquidation preference of $4 per share	9	9
Common stock, $.001 par value, 40,000 shares authorized; 20,175 and 20,674 shares issued and outstanding, respectively	20	21
Additional paid-in capital	2,347	12,478
Retained earnings	123,215	122,172
Total shareholders' equity	125,591	134,680
Total liabilities and shareholders' equity	$ 145,537	$ 154,427