Note 5 - Property and Equipment (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Telephone Plant Adjustment [Member]
Amortization	$ 385	$ 385	$ 384
Depreciation	7,678	8,941	9,650
Amortization	$ 1,200	$ 1,642	$ 2,982