CONSOLIDATED BALANCE SHEETS (in thousands, except share data) (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
CURRENT ASSETS:
Cash and cash equivalents	$ 18,902	$ 18,541
Trade accounts receivable, net of allowance for doubtful accounts of $52 and $73, respectively	2,824	3,769
Inventories	4,558	4,168
Other current assets	738	708
TOTAL CURRENT ASSETS	27,022	27,186
Property, plant and equipment - net	2,023	2,458
Income tax receivable	598	598
Other assets	220	45
TOTAL ASSETS	29,863	30,287
CURRENT LIABILITIES:
Accounts payable	1,286	1,301
Accrued compensation	2,211	3,536
Deferred revenue	1,775	1,787
Other accrued liabilities	794	858
Income taxes payable	358	218
TOTAL CURRENT LIABILITIES	6,424	7,700
Long-term other payables	414	527
COMMITMENTS	0	0
STOCKHOLDERS' EQUITY
Preferred stock - Authorized, 5,000,000 shares, including 200,000 shares of Series A Junior Participating Issued and outstanding, none	0	0
Common stock, at stated value - Authorized, 30,000,000 shares issued and outstanding, 8,440,075 shares as of September 30, 2018 and 8,276,813 shares as of December 31, 2017	19,493	18,989
Accumulated earnings	3,047	2,089
Accumulated other comprehensive income	485	982
TOTAL STOCKHOLDERS' EQUITY	23,025	22,060
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 29,863	$ 30,287