Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Current assets:
Cash and cash equivalents	$ 77,936	$ 58,730
Accounts receivable, less allowance for doubtful accounts of $35 and $27, respectively	2,292	1,808
Inventories - finished goods	23,337	20,228
Prepaid expenses and other current assets	882	1,019
Prepaid income taxes	788
Total current assets	105,235	81,785
Noncurrent assets:
Property and equipment, net	28,741	30,164
Intangible assets	860	860
Total noncurrent assets	29,601	31,024
Total assets	134,836	112,809
Current liabilities:
Accounts payable	15,274	15,221
Accrued expenses and other current liabilities	2,835	2,475
Income taxes payable		659
Total current liabilities	18,109	18,355
Deferred tax liabilities	996	1,088
Total liabilities	19,105	19,443
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; 20,601 and 20,526 shares issued and outstanding, respectively	21	21
Additional paid-in capital	9,381	6,806
Retained earnings	106,320	86,530
Total shareholders' equity	115,731	93,366
Total liabilities and shareholders' equity	$ 134,836	$ 112,809