Summary of Significant Accounting Policies - Basic and Diluted Common Shares (Details) - shares	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Basic weighted-average shares (in shares)	12,464,496	12,322,110
Effect of dilutive securities:
Warrants (in shares)	0	4,169
Diluted weighted-average shares (in shares)	12,502,254	12,408,348
Options
Effect of dilutive securities:
Effect of dilutive securities (in shares)	15,109	49,858
Unvested restricted stock units
Effect of dilutive securities:
Effect of dilutive securities (in shares)	22,649	32,211