Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Cash Flows From Operating Activities:
Net income	$ 2,079,000	$ 977,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Share-based compensation expense	150,000	228,000
Depreciation and amortization	722,000	764,000
Equity in income of unconsolidated affiliate	(210,000)	(480,000)
Gain on investment in common stock warrants	(350,000)
Deferred income taxes	(3,000)	(6,000)
Changes in assets and liabilities:
Accounts receivable, net	1,279,000	(1,625,000)
Inventories	3,024,000	(1,598,000)
Prepaid expenses	(669,000)	(56,000)
Accounts payable and accrued liabilities	71,000	782,000
Net cash provided by (used in) operating activities	6,093,000	(1,014,000)
Cash Flows From Investing Activities:
Purchase of property and equipment	(349,000)	(519,000)
Purchase of intangible assets	(1,000)	(6,000)
Repayment of advances by unconsolidated affilitate		417,000
Purchase of marketable securities		(255,000)
Net cash used in investing activities	(350,000)	(363,000)
Cash Flows From Financing Activities:
Proceeds from exercise of stock options	1,052,000	9,000
Repurchase of common stock	(3,134,000)	(1,581,000)
Net cash used in financing activities	(2,082,000)	(1,572,000)
Changes in cash and cash equivalents	3,661,000	(2,949,000)
Cash and cash equivalents, beginning of the year	4,554,000	7,503,000
Cash and cash equivalents, end of the year	8,215,000	4,554,000
Supplemental disclosure of cash flow information:
Cash paid for income taxes	$ 798,000	$ 310,000