Income Taxes - Additional Information (Detail) (USD $)	0 Months Ended		3 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2013
Schedule Of Income Taxes [Line Items]
Percentage of net deferred tax assets recognized due to uncertainty	100.00%		100.00%
Goodwill for tax purposes amortization period			15 years
Deferred tax liability	$ 2,270,000	$ 2,210,000	$ 2,270,000
Accruals of interest and penalties	0	0	0
Recognized interest or penalties	$ 0	$ 0