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Note 6 - Other (Income) Expense (Details) - Components of Other (Income) Expense (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Components of Other (Income) Expense [Abstract]
Earnings from equity method investments	$ (589)	$ (1,107)	$ (1,230)
Other	(419)	(417)	(1,211)
	$ (1,008)us-gaap_OtherOperatingIncomeExpenseNet	$ (1,524)us-gaap_OtherOperatingIncomeExpenseNet	$ (2,441)us-gaap_OtherOperatingIncomeExpenseNet

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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