CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current Assets
Cash and cash equivalents	$ 101,842	$ 81,364
Accounts receivable-net of doubtful accounts of $270 and $394 at March 31, 2019 and December 31, 2018, respectively	631	1,011
Inventory	43,257	38,888
Investment securities	18,585	19,670
Prepaid expenses and other current assets	4,995	4,586
Total current assets	169,310	145,519
Property, plant and equipment - net	23,343	19,747
Right-of-use asset	12,864
Other assets	941	1,183
Deferred tax assets	3,612	2,980
TOTAL ASSETS	210,070	169,429
Current liabilities
Accounts payable and accrued expenses	74,452	60,323
Current lease obligation	2,443
Total current liabilities	76,895	60,323
Other liabilities:
Lease obligation, less current lease obligation	11,107
Total liabilities	88,002	60,323
Stockholders' Equity:
Common stock, par value $.001 per share: 20,000 shares authorized; 12,126 and 12,117 issued and 11,898 and 11,868 outstanding at March 31, 2019 and December 31, 2018, respectively	12	12
Additional paid-in capital	9,805	8,802
Accumulated other comprehensive loss	(46)	(173)
Retained earnings	143,176	131,344
Less: Treasury stock at cost, 193 shares at March 31, 2019 and December 31, 2018, respectively	(30,879)	(30,879)
Total stockholders' equity	122,068	109,106
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 210,070	$ 169,429