Stock-Based Compensation - Additional Information (Detail) (USD $)	9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuance	50.00%
Share based compensation percentage criteria description	More than 50% of the outstanding shares
Maximum aggregate fair market value of shares	$ 100,000
Shares grant period	10 years
Weighted-average vesting period for recognition of compensation expenses	3 years 2 months 12 days
Stock Appreciation Right [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate number of shares	50,000
Restricted Stock Unit Activity [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, granted	0	0
Restricted stock units, granted	32,800
Compensation expense related to non-vested awards not yet recognized	$ 653,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum Vesting Period	4 years
Restricted stock units, granted	32,800	0
Rate of restricted stock units vest under plan	25.00%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Date of grant remaining term of option	10 years
Maximum Vesting Period	5 years
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of exercise price of fair value	110.00%
Minimum [Member] | Incentive Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shareholder ownership to meet incentive stock option	10.00%