Note 6 - Capital Stock, Treasury Stock, Contributed Capital and Stock Options: (Details) (USD $)	6 Months Ended		9 Months Ended														3 Months Ended	9 Months Ended	3 Months Ended			9 Months Ended			3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Common Class A [Member] 2013 Omnibus Equity Plan [Member]	Jun. 30, 2013 Common Class A [Member] Directors Plans [Member]	Jun. 30, 2013 Common Class A [Member]	Sep. 30, 2012 Common Class A [Member]	Jun. 30, 2012 Common Class A [Member]	Jun. 30, 2013 Common Class A [Member] Minimum [Member]	Jun. 30, 2013 Common Class A [Member] Maximum [Member]	Jun. 30, 2013 Common Class B [Member]	Sep. 30, 2012 Common Class B [Member]	Jun. 30, 2012 Common Class B [Member]	Jun. 30, 2013 Common Class B [Member] Minimum [Member]	Jun. 30, 2013 Common Class B [Member] Maximum [Member]	Mar. 31, 2012 Employee Plans [Member]	Jun. 30, 2013 Employee Plans [Member]	Jun. 30, 2013 Directors Plans [Member]	Mar. 31, 2013 Directors Plans [Member]	Dec. 31, 2012 Directors Plans [Member]	Jun. 30, 2013 Directors Plans [Member]	Jun. 30, 2012 Directors Plans [Member]	Sep. 30, 2012 Directors Plans [Member]	Mar. 31, 2012 Expired Directors Plans [Member]
Note 6 - Capital Stock, Treasury Stock, Contributed Capital and Stock Options: (Details) [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance					150,000		958,233
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term																		10 years
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit (in Dollars per share)			$ 2.925														$ 3.55					$ 2.925			$ 2.925
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options						31,000											26,850		31,000			31,000	42,000	33,000
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit (in Dollars per share)																						$ 11.00
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period																				2,000					3,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price (in Dollars per share)																				$ 3.67					$ 3.55
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross																									7,000
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Remaining Contractual Term																					3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period																					3 years
Share-based Compensation (in Dollars)	$ 1,208	$ 2,841	$ 5,257	$ 8,547
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate																			5.00%				5.50%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term																						10 years	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate																			0.00%				0.00%
Common Stock, Shares Authorized	1,000,000		1,000,000				10,000,000	10,000,000	10,000,000	3,750,000	10,000,000	2,500,000	2,500,000	12,500,000	1,000,000	2,500,000