Note 10 - Stockholders' Equity (Details) - Summary of Changes in Stockholders Equity (USD $)	3 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Note 10 - Stockholders' Equity (Details) - Summary of Changes in Stockholders Equity [Line Items]
Balances, September 30, 2013 (in Shares)	32,900,705
Balances, September 30, 2013	$ 329
Balances, September 30, 2013	87,434,834
Balances, September 30, 2013	(62,673,754)
Balances, September 30, 2013	24,761,409
Issuance of common stock upon exercise of stock options, net (in Shares)	357,476
Issuance of common stock upon exercise of stock options, net	193,064
Share-based compensation expense	149,814	205,978
Repurchase of common stock	62,177
Repurchase of common stock	(62,177)
Treasury shares	(37,420)
Treasury shares (in Shares)	(19,796)
Net income	131,563	(100,376)
Balances, December 31, 2013 (in Shares)	33,205,373
Balances, December 31, 2013	332
Balances, December 31, 2013	(37,420)
Balances, December 31, 2013	87,715,532
Balances, December 31, 2013	(62,542,191)
Balances, December 31, 2013	25,136,253
Common Stock [Member]
Note 10 - Stockholders' Equity (Details) - Summary of Changes in Stockholders Equity [Line Items]
Balances, September 30, 2013 (in Shares)	32,900,705
Balances, September 30, 2013	329
Issuance of common stock upon exercise of stock options, net (in Shares)	357,476
Issuance of common stock upon exercise of stock options, net	4
Repurchase of common stock (in Shares)	(33,012)
Repurchase of common stock	(1)
Repurchase of common stock	1
Treasury shares (in Shares)	(19,796)
Balances, December 31, 2013 (in Shares)	33,205,373
Balances, December 31, 2013	332
Treasury Stock [Member]
Note 10 - Stockholders' Equity (Details) - Summary of Changes in Stockholders Equity [Line Items]
Treasury shares	(37,420)
Treasury shares	(37,420)
Balances, December 31, 2013	(37,420)
Additional Paid-in Capital [Member]
Note 10 - Stockholders' Equity (Details) - Summary of Changes in Stockholders Equity [Line Items]
Balances, September 30, 2013	87,434,834
Issuance of common stock upon exercise of stock options, net	193,060
Share-based compensation expense	149,814
Repurchase of common stock	(62,176)
Balances, December 31, 2013	87,715,532
Retained Earnings [Member]
Note 10 - Stockholders' Equity (Details) - Summary of Changes in Stockholders Equity [Line Items]
Balances, September 30, 2013	(62,673,754)
Net income	131,563
Balances, December 31, 2013	$ (62,542,191)

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Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.