Note 14 - Accumulated Other Comprehensive Income (Details) - Changes in Accumulated Other Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (930)		$ (1,566)
Net current period other comprehensive income (loss)	120	$ (824)	756	$ (612)
Ending balance	(810)		(810)
Other comprehensive income before reclassifications	119		95
Amounts reclassified from accumulated other comprehensive income (loss)	1		661
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(403)		(295)
Net current period other comprehensive income (loss)	397		289
Ending balance	(6)		(6)
Other comprehensive income before reclassifications	397		263
Amounts reclassified from accumulated other comprehensive income (loss)	0		26
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	169		(618)
Net current period other comprehensive income (loss)	(244)		543
Ending balance	(75)		(75)
Other comprehensive income before reclassifications	(240)		(77)
Amounts reclassified from accumulated other comprehensive income (loss)	(4)		620
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(425)		(435)
Net current period other comprehensive income (loss)	5		15
Ending balance	(420)		(420)
Other comprehensive income before reclassifications	0		0
Amounts reclassified from accumulated other comprehensive income (loss)	5		15
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(271)		(218)
Net current period other comprehensive income (loss)	(38)		(91)
Ending balance	(309)		(309)
Other comprehensive income before reclassifications	(38)		(91)
Amounts reclassified from accumulated other comprehensive income (loss)	$ 0		$ 0