Note 10 - Segment Financial Information: Schedule of Segment Reporting Information, by Segment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Segment Reporting Information, Revenue for Reportable Segment	$ 46,979	$ 43,619	$ 138,628	$ 128,082
Profit (Loss)	18,827	18,510	59,882	55,777
Segment Reporting Information, Net Assets	417,275		417,275		418,803
Division I
Segment Reporting Information, Revenue for Reportable Segment	6,617	5,969	19,362	17,382
Profit (Loss)	2,297	2,233	7,339	6,312
Segment Reporting Information, Net Assets	53,855		53,855		53,529
Division II
Segment Reporting Information, Revenue for Reportable Segment	11,456	10,691	33,737	31,282
Profit (Loss)	5,399	5,262	16,505	15,739
Segment Reporting Information, Net Assets	99,582		99,582		100,646
Division III
Segment Reporting Information, Revenue for Reportable Segment	10,739	10,208	31,945	29,999
Profit (Loss)	4,502	4,629	14,783	14,113
Segment Reporting Information, Net Assets	94,055		94,055		97,290
Division IV
Segment Reporting Information, Revenue for Reportable Segment	9,770	8,864	28,458	26,041
Profit (Loss)	3,753	3,474	11,610	10,437
Segment Reporting Information, Net Assets	98,243		98,243		96,440
Division V
Segment Reporting Information, Revenue for Reportable Segment	8,397	7,887	25,126	23,378
Profit (Loss)	2,876	2,912	9,645	9,176
Segment Reporting Information, Net Assets	$ 71,540		$ 71,540		$ 70,898