Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Mar. 31, 2019
Current assets:
Cash and cash equivalents	$ 83,398	$ 100,529
Accounts receivable, less allowance for doubtful accounts of $33 and $39, respectively	2,145	2,542
Inventories - finished goods	30,168	21,370
Prepaid expenses and other current assets	1,506	1,408
Prepaid income taxes		582
Total current assets	117,217	126,431
Noncurrent assets:
Property and equipment, net	26,760	27,136
Intangible assets	860	860
Total noncurrent assets	27,620	27,996
Total assets	144,837	154,427
Current liabilities:
Accounts payable	15,689	16,275
Accrued expenses and other current liabilities	3,325	2,351
Income taxes payable	1,241
Total current liabilities	20,255	18,626
Deferred tax liabilities	939	1,121
Total liabilities	21,194	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; 20,060 and 20,674 shares issued and outstanding, respectively	20	21
Additional paid-in capital	1,617	12,478
Retained earnings	121,997	122,172
Total shareholders' equity	123,643	134,680
Total liabilities and shareholders' equity	$ 144,837	$ 154,427