CONSOLIDATED BALANCE SHEETS (in thousands, except share data) (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 14,782	$ 18,343
Trade accounts receivable, net of allowance for doubtful accounts of $52 and $73, respectively	4,663	3,771
Inventories	5,744	5,185
Other current assets	854	621
TOTAL CURRENT ASSETS	26,043	27,920
Property, plant and equipment - net	1,969	1,985
Income tax receivable	640	598
Other assets	2,258	220
TOTAL ASSETS	30,910	30,723
CURRENT LIABILITIES:
Accounts payable	1,236	1,755
Accrued compensation	1,401	2,872
Deferred revenue	1,436	1,392
Other accrued liabilities	1,405	789
Income taxes payable	44	47
TOTAL CURRENT LIABILITIES	5,522	6,855
Operating lease liabilities	1,737	0
Long-term other payables	159	511
COMMITMENTS
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, 8,287,825 shares as of March 31, 2019 and 8,338,628 shares as of December 31, 2018	19,235	19,254
Accumulated earnings	3,721	3,695
Accumulated other comprehensive income	536	408
TOTAL STOCKHOLDERS' EQUITY	23,492	23,357
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 30,910	$ 30,723