Note 10 - TEL's Summarized Financial Information - Income Statement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenue	$ 104,838	$ 90,197	$ 58,484
Operating Expenses	91,644	79,771	50,878
Operating Income	13,194	10,426	7,606
Net Income	$ 9,061	$ 7,564	$ 5,643