Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Cash Flows From Operating Activities:
Net income	$ 148,000		$ 269,000
Adjustments to reconcile net income to net cash used in operating activities:
Stock-based compensation expense	6,000		8,000
Depreciation and amortization	171,000		188,000
Equity in income of unconsolidated affiliate	(98,000)		(110,000)
Gain on investment in common stock warrants			(30,000)
Changes in assets and liabilities:
Accounts receivable, net	(2,459,000)		(2,064,000)
Accounts receivable, related party	(84,000)
Inventories	(2,573,000)		(342,000)
Prepaid expenses	(56,000)		(291,000)
Accounts payable and accrued liabilities	924,000		(295,000)
Net cash used in operating activities	(4,021,000)		(2,667,000)
Cash Flows From Investing Activities:
Purchase of property and equipment	(58,000)		(21,000)
Purchase of investments			(134,000)
Net cash used in investing activities	(58,000)		(155,000)
Cash Flows From Financing Activities:
Repurchase of common stock	(311,000)		(577,000)
Proceeds from exercise of stock options			48,000
Net cash used in financing activities	(311,000)		(529,000)
Decrease in cash	(4,390,000)		(3,351,000)
Cash, beginning of the period	5,495,000	[1]	8,215,000
Cash, end of the period	$ 1,105,000		$ 4,864,000

[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.