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Stock Repurchase Program - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended
	Jul. 31, 2010	Sep. 30, 2012	Sep. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase of treasury stock		$ 3,000	$ 188,000
Stock Repurchased		438
Authorization of stock repurchase plan	10,000,000
Available cost of common stock		$ 1,400,000

The cash outflow to reacquire common stock during the period.

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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