Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Cash Flows From Operating Activities:
Net income	$ 933,000	$ 1,301,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Share-based compensation expense	268,000	193,000
Proceeds from dividends from equity investments in unconsolidated affiliates		77,000
Depreciation and amortization	818,000	844,000
Equity in income of unconsolidated affiliates	(494,000)	(317,000)
Deferred income taxes	55,000	(253,000)
Gain on sale of assets	(41,000)
Changes in assets and liabilities:
Accounts receivable, net	(909,000)	4,777,000
Inventories	1,571,000	(4,224,000)
Prepaid expenses	1,476,000	(927,000)
Accounts payable and accrued liabilities	89,000	(4,912,000)
Net cash provided by (used in) operating activities	3,766,000	(3,441,000)
Cash Flows From Investing Activities:
Purchase of property and equipment	(269,000)	(1,134,000)
Purchase of intangible assets	(8,000)	(9,000)
Proceeds from sale of assets	235,000
Net cash used in investing activities	(42,000)	(1,143,000)
Cash Flows From Financing Activities:
Proceeds from exercise of stock options	16,000	6,000
Repurchase of common stock	(1,553,000)
Income tax benefit from stock options exercised		5,000
Excess tax benefit related to share-based compensation		136,000
Net cash (used in) provided by financing activities	(1,537,000)	147,000
Changes in cash and cash equivalents	2,187,000	(4,437,000)
Cash and cash equivalents, beginning of year	5,316,000	9,753,000
Cash and cash equivalents, end of year	7,503,000	5,316,000
Supplemental disclosure of cash flow information:
Cash paid for income taxes	$ 609,000	$ 1,365,000