CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 67,360	$ 16,466
Short term investments	0	61,678
Trade accounts receivable, net of allowance of $285 and $428	6,218	5,015
Inventories, net of provision for obsolescence of $402 and $439	6,392	5,212
Prepaid expenses and other current assets	1,987	1,146
Total current assets	81,957	89,517
Property and equipment, net	6,300	5,788
Intangibles	185	191
Deposits	73	73
Other assets	368	41
Total assets	88,883	95,610
Current liabilities:
Accounts payable	1,641	1,423
Accrued and other liabilities	5,848	5,552
Accrued severance and related	408	727
Total current liabilities	7,897	7,702
Note payable	140	140
Long term lease liability	267
Total liabilities	8,304	7,842
STOCKHOLDERS’ EQUITY
Common stock, $0.001 par value; 75,000,000 shares authorized; 33,847,100 issued and 33,704,525 outstanding as of December 31, 2018, and 34,061,360 issued and 33,918,785 outstanding as of June 30, 2019	34	34
Additional paid-in capital	54,051	52,221
Retained earnings	26,494	35,513
Total stockholders’ equity	80,579	87,768
Total liabilities and stockholders’ equity	$ 88,883	$ 95,610