Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013
Cash Flows From Operating Activities:
Net income	$ 1,164,000		$ 490,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Stock-based compensation expense	16,000		108,000
Depreciation and amortization	364,000		356,000
Equity in income of unconsolidated affiliate	(195,000)		(71,000)
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	(1,842,000)		501,000
Inventories	127,000		2,881,000
Prepaid expenses	484,000		(866,000)
Accounts payable and accrued liabilities	(543,000)		(177,000)
Net cash provided by (used in) operating activities	(834,000)		3,222,000
Cash Flows From Investing Activities:
Purchase of property and equipment	(822,000)		(149,000)
Purchase of intangible assets			(1,000)
Purchase of marketable securities	(134,000)
Proceeds from sale of marketable securities	440,000
Net cash used in investing activities	(516,000)		(150,000)
Cash Flows From Financing Activities:
Proceeds from exercise of stock options	151,000		56,000
Repurchase of common stock	(1,745,000)		(1,553,000)
Net cash used in financing activities	(1,594,000)		(1,497,000)
Net (decrease) increase in cash and cash equivalents	(2,944,000)		1,575,000
Cash and cash equivalents, beginning of the period	8,215,000	[1]	4,554,000
Cash and cash equivalents, end of the period	$ 5,271,000		$ 6,129,000

[1] The condensed consolidated balance sheet as of December 31, 2013 has been prepared using information from the audited consolidated balance sheet as of that date.