Note 10 - Segment Financial Information: Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Segment Reporting Information, Revenue for Reportable Segment	$ 50,615	$ 48,101
Profit (Loss)	18,545	21,068
Segment Reporting Information, Net Assets	444,807		$ 470,030
Division I
Segment Reporting Information, Revenue for Reportable Segment	7,242	6,889
Profit (Loss)	1,962	2,564
Segment Reporting Information, Net Assets	61,383		65,026
Division II
Segment Reporting Information, Revenue for Reportable Segment	12,236	11,839
Profit (Loss)	5,259	6,078
Segment Reporting Information, Net Assets	103,922		110,524
Division III
Segment Reporting Information, Revenue for Reportable Segment	11,342	10,723
Profit (Loss)	4,889	5,128
Segment Reporting Information, Net Assets	96,016		103,027
Division IV
Segment Reporting Information, Revenue for Reportable Segment	10,616	9,852
Profit (Loss)	3,874	3,975
Segment Reporting Information, Net Assets	106,690		109,469
Division V
Segment Reporting Information, Revenue for Reportable Segment	9,179	8,798
Profit (Loss)	2,561	$ 3,323
Segment Reporting Information, Net Assets	$ 76,796		$ 81,984