CONSOLIDATED BALANCE SHEETS (in thousands, except share data) (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 15,178	$ 18,343
Trade accounts receivable, net of allowance for doubtful accounts of $48 and $75, respectively	2,406	3,771
Inventories	5,432	5,185
Other current assets	582	621
TOTAL CURRENT ASSETS	23,598	27,920
Property, plant and equipment - net	1,733	1,985
Income tax receivable	640	598
Other assets	2,108	220
TOTAL ASSETS	28,079	30,723
CURRENT LIABILITIES:
Accounts payable	869	1,755
Accrued compensation	1,373	2,872
Deferred revenue	1,586	1,392
Other accrued liabilities	1,308	789
Income taxes payable	49	47
TOTAL CURRENT LIABILITIES	5,185	6,855
Operating lease liabilities	1,334	0
Long-term other payables	126	511
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, 8,210,884 shares as of September 30, 2019 and 8,338,628 shares as of December 31, 2018	18,490	19,254
Accumulated earnings	3,004	3,695
Accumulated other comprehensive income (loss)	(60)	408
TOTAL STOCKHOLDERS' EQUITY	21,434	23,357
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 28,079	$ 30,723