Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2016		Jun. 30, 2015
Cash Flows From Operating Activities:
Net income	$ 1,304,000		$ 436,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Stock-based compensation expense	34,000		11,000
Depreciation and amortization	271,000		321,000
Equity in income of unconsolidated affiliate	(191,000)		(215,000)
Changes in assets and liabilities:
Accounts receivable, net	(2,351,000)		(438,000)
Accounts receivable, unconsolidated affiliate	6,000		249,000
Inventories	3,742,000		(2,674,000)
Prepaid expenses and other current assets	150,000		1,667,000
Accounts payable and accrued liabilities	(103,000)		(567,000)
Net cash provided by (used in) operating activities	2,862,000		(1,210,000)
Cash Flows From Investing Activities:
Purchase of property and equipment	(163,000)		(106,000)
Purchase of marketable securities	(41,000)		(15,000)
Net cash used in investing activities	(204,000)		(121,000)
Cash Flows From Financing Activities:
Repurchase of common stock	(1,751,000)		(968,000)
Proceeds from exercise of stock options			718,000
Net cash used in financing activities	(1,751,000)		(250,000)
Increase (decrease) in cash	907,000		(1,581,000)
Cash, beginning of the period	9,681,000	[1]	5,495,000
Cash, end of the period	$ 10,588,000		$ 3,914,000

[1] The condensed consolidated balance sheet as of December 31, 2015 has been prepared using information from the audited consolidated balance sheet as of that date.