Consolidated Statements Of Cash Flows - USD ($)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 2,827,000	$ 1,312,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	2,499,000	2,285,000
Recovery of doubtful accounts	(159,000)	(48,000)
Deferred taxes	371,000	(297,000)
Foreign currency transaction losses (gains)	(155,000)	115,000
Share-based compensation	936,000	895,000
Unrealized loss on available for sale equity security	37,000	0
Realized gain on available for sale market securities	(3,000)	0
Changes in operating assets and liabilities:
Accounts receivable	(4,928,000)	171,000
Inventories	(2,845,000)	(3,163,000)
Other assets	(542,000)	(31,000)
Accounts payable	4,266,000	(2,100,000)
Advance customer payments	10,000	62,000
Accrued expenses	1,782,000	(1,627,000)
Net cash provided by (used in) operating activities	4,096,000	(2,426,000)
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from maturities of available-for-sale marketable securities	8,053,000	6,931,000
Proceeds from sales of available-for-sale marketable securities	545,000	0
Purchases of available-for-sale marketable securities	(8,944,000)	(7,475,000)
Additions to equipment and leasehold improvements	(1,964,000)	(1,226,000)
Additions to patents	(115,000)	(120,000)
Net cash used in investing activities	(2,425,000)	(1,890,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options	525,000	378,000
Tax payments related to shares withheld for share-based compensation plans	(123,000)	(35,000)
Common stock repurchases	0	(240,000)
Proceeds from issuance of common stock under employee stock purchase plan	219,000	258,000
Net cash provided by financing activities	621,000	361,000
Effects of exchange rate changes on cash and cash equivalents	12,000	259,000
Net increase (decrease) in cash and cash equivalents	2,304,000	(3,696,000)
Cash and cash equivalents – beginning of period	6,944,000	10,640,000
Cash and cash equivalents – end of period	$ 9,248,000	$ 6,944,000

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-Paragraph 2
-Subparagraph (SX 210.5-03.5)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130534-203044

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

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