Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2015		Jun. 30, 2014
Cash Flows From Operating Activities:
Net income	$ 436,000		$ 1,164,000
Adjustments to reconcile net income to net cash used in operating activities:
Stock-based compensation expense	11,000		16,000
Depreciation and amortization	321,000		364,000
Equity in income of unconsolidated affiliate	$ (215,000)		(195,000)
Gain on investment in common stock warrants			(30,000)
Gain on sale of marketable securities			(379,000)
Changes in assets and liabilities:
Accounts receivable, net	$ (438,000)		(1,676,000)
Accounts receivable, related party	249,000		(166,000)
Inventories	(2,674,000)		127,000
Prepaid expenses	1,667,000		484,000
Accounts payable and accrued liabilities	(567,000)		(543,000)
Net cash used in operating activities	(1,210,000)		(834,000)
Cash Flows From Investing Activities:
Purchase of property and equipment	(106,000)		(822,000)
Purchase of marketable securities	(15,000)		(134,000)
Proceeds from sale of marketable securities	0		440,000
Net cash used in investing activities	(121,000)		(516,000)
Cash Flows From Financing Activities:
Repurchase of common stock	(968,000)		(1,745,000)
Proceeds from exercise of stock options	718,000		151,000
Net cash used in financing activities	(250,000)		(1,594,000)
Decrease in cash	(1,581,000)		(2,944,000)
Cash, beginning of the period	5,495,000	[1]	8,215,000
Cash, end of the period	$ 3,914,000		$ 5,271,000

[1] The condensed consolidated balance sheet as of December 31, 2014 has been prepared using information from the audited consolidated balance sheet as of that date.