Calculation of Basic and Diluted Net Income Per Common Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Numerator
Net income	$ 102	$ 785	$ 799	$ 2,313
Denominator
Basic weighted average common shares outstanding	6,890,943	6,971,486	6,904,375	6,992,371
Dilutive effect of stock options	9,000	14,000	10,000	8,000
Diluted weighted average common shares outstanding	6,900,169	6,985,341	6,914,586	6,999,604
Basic net income per common share	$ 0.01	$ 0.11	$ 0.12	$ 0.33
Diluted net income per common share	$ 0.01	$ 0.11	$ 0.12	$ 0.33