Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Operating Activities:
Net income	$ 3,327,088	$ 1,262,812
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	209,975	146,307
Provision for doubtful accounts	(3,772)	(600)
Warranty provision	157,819	19,254
Inventory obsolescence	36,967	(143,686)
Share-based compensation	585,753	736,378
Loss on sale or impairment of patents	6,980	86,445
Changes in operating assets and liabilities:
Accounts receivable	678,253	559,962
Inventories	655,047	(1,331,575)
Prepaid expenses and other	479,928	(562,052)
Prepaid expenses and other - noncurrent	148,093	187,500
Accounts payable	(765,906)	600,690
Warranty settlements	(56,267)	(10,808)
Accrued and other liabilities	2,942,897	205,072
Net cash provided by operating activities	8,402,855	1,755,699
Investing Activities:
Capital expenditures	(326,957)	(147,504)
Patent costs paid	(14,890)	(2,955)
Net cash used in investing activities	(341,847)	(150,459)
Financing Activities:
Repurchase of common stock	(516,352)
Proceeds from exercise of stock options	544,893	340,450
Net cash provided by financing activities	28,541	340,450
Net increase in cash	8,089,549	1,945,690
Cash, beginning of period	15,805,195	13,859,505
Cash, end of period	23,894,744	15,805,195
Supplemental Disclosure of Cash Flow Information
Cash paid (refunded) for taxes	$ 14,445	$ (38,662)