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Note 4 - Investments (Details) - Unaudited Summarized Financial Information for NKD Enterprises, LLC - Operations (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Unaudited Summarized Financial Information for NKD Enterprises, LLC - Operations [Abstract]
Revenues	$ 1,789	$ 1,797
Operating income (loss)	85	(48)
Net income (loss)	85	(48)
Current assets	180	121
Non-current assets	3,007	3,012
Current liabilities	249	277
Stockholders’ equity	$ 2,938	$ 2,856

The amount of current assets reported by an equity method investment of the entity.

The amount of current liabilities reported by an equity method investment of the entity.

The amount of net income (loss) reported by an equity method investment of the entity.

The amount of noncurrent assets reported by an equity method investment of the entity.