Stockholders' Equity (Narrative) (Details) - USD ($)				1 Months Ended	12 Months Ended		26 Months Ended
	May. 07, 2015	Jan. 29, 2015	Mar. 28, 2014	Aug. 21, 2013	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Nov. 14, 2014
Schedule Of Stockholders Equity [Line Items]
Preferred stock, shares authorized					5,000,000	5,000,000	5,000,000
Preferred stock, par value					$ 0.01	$ 0.01	$ 0.01
Common stock, par value					$ 0.001	$ 0.001	$ 0.001
Aggregate amount of stock value authorized by SEC to be issued	$ 75,000,000
Aggregate amount of stock shares authorized by SEC to be issued		2,094,236
Issuance of common shares and warrants in public offering, shares	2,783,810
Public offering, shares issued, price per unit	$ 8.15			$ 2.50
Proceeds from shares issued	$ 20,600,000
Stock based compensation expense					$ 478,000	$ 162,000
Stock option exercise					75,000	20,000
Net proceeds from warrant exercises					$ 3,221,000	$ 6,561,000	$ 9,782,000
Non-Statutory Stock Options [Member]
Schedule Of Stockholders Equity [Line Items]
Stock options granted, shares					80,871
Stock Options [Member]
Schedule Of Stockholders Equity [Line Items]
Stock options granted, shares					193,464
Stock options granted, exercise price					$ 7.82
Remaining total unrecognized compensation cost related to unvested stock-based arrangements					$ 1,010,000		1,010,000
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, period for recognition					2 years 11 months 23 days
Restricted Stock [Member]
Schedule Of Stockholders Equity [Line Items]
Restricted stock granted, shares					24,586
Restricted stock granted, weighted average grant date fair value per share						$ 3.23
Vesting period					3 years
Remaining total unrecognized compensation cost related to unvested stock-based arrangements					$ 437,000		$ 437,000
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, period for recognition					2 years 9 months
Incentive Stock Options [Member]
Schedule Of Stockholders Equity [Line Items]
Stock options granted, shares					112,593	89,500
Stock options granted, exercise price						$ 2.48
Stock options granted, per-share weighted average fair value						$ 2.12
2008 Plan [Member]
Schedule Of Stockholders Equity [Line Items]
Shares authorized to issue under plan					1,000,000		1,000,000
Shares available for future grants					264,253		264,253
Minimum [Member] | Non-Statutory Stock Options [Member]
Schedule Of Stockholders Equity [Line Items]
Stock options granted, exercise price					$ 6.64
Stock options granted, per-share weighted average fair value					4.82
Minimum [Member] | Restricted Stock [Member]
Schedule Of Stockholders Equity [Line Items]
Restricted stock granted, weighted average grant date fair value per share					8.23
Maximum [Member] | Non-Statutory Stock Options [Member]
Schedule Of Stockholders Equity [Line Items]
Stock options granted, exercise price					9.17
Stock options granted, per-share weighted average fair value					6.88
Maximum [Member] | Restricted Stock [Member]
Schedule Of Stockholders Equity [Line Items]
Restricted stock granted, weighted average grant date fair value per share					$ 8.60
Common Stock [Member]
Schedule Of Stockholders Equity [Line Items]
Conversion of stock, shares issued upon conversion			710,902
Common stock, par value			$ 0.001
Issuance of common shares and warrants in public offering, shares				2,200,000	2,783,810
Stock issued from exercise of warrants					1,182,600	2,609,149
A Warrants [Member]
Schedule Of Stockholders Equity [Line Items]
Warrants issued				2,200,000
Number of common stock to be purchased by warrants				2,200,000
Number of shares in each unit				1
Number of warrants in each unit				1
Shares covered by each warrant				1				1
Exercise date				Aug. 16, 2018
Exercise price				$ 2.75	$ 0.01		$ 0.01	$ 2.75
A Warrants [Member] | Underwriters [Member]
Schedule Of Stockholders Equity [Line Items]
Warrants issued				330,000
Number of common stock to be purchased by warrants				330,000
B Warrants [Member]
Schedule Of Stockholders Equity [Line Items]
Warrants issued				2,200,000
Number of common stock to be purchased by warrants				1,100,000
Number of shares in each unit				1
Number of warrants in each unit				2
Shares covered by each warrant				1
Exercise date				May 16, 2014
Exercise price				$ 2.50
B Warrants [Member] | Underwriters [Member]
Schedule Of Stockholders Equity [Line Items]
Warrants issued				330,000
Number of common stock to be purchased by warrants				165,000
Representative Warrants [Member] | Underwriters [Member]
Schedule Of Stockholders Equity [Line Items]
Warrants issued				154,000
Number of common stock to be purchased by warrants				154,000
Exercise price				$ 3.125
Representative Warrants [Member] | Underwriters [Member] | Minimum [Member]
Schedule Of Stockholders Equity [Line Items]
Exercise date				May 16, 2014
Representative Warrants [Member] | Underwriters [Member] | Maximum [Member]
Schedule Of Stockholders Equity [Line Items]
Exercise date				Aug. 16, 2016
Series C Convertible Preferred Stock [Member]
Schedule Of Stockholders Equity [Line Items]
Conversion of stock, shares converted			355,451
Preferred stock, par value			$ 0.01