Shares Used to Compute Earnings (Loss) Per Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Schedule Of Computation Of Basic And Diluted Earnings Per Common Share [Line Items]
Income from continuing operations	$ 2,761	$ 1,237	$ 3,912	$ 1,272
Basic weighted-average shares	7,732,000	7,548,000	7,700,000	7,544,000
Diluted:
Weighted-average shares, basic	7,732,000	7,548,000	7,700,000	7,544,000
Weighted-average shares, diluted	8,039,000	7,634,000	7,961,000	7,626,000
Basic earnings per share from continuing operations	$ 0.36	$ 0.16	$ 0.51	$ 0.17
Diluted earnings per share from continuing operations	$ 0.34	$ 0.16	$ 0.49	$ 0.17
Stock Option
Diluted:
Dilutive Effect of Stock	271,000	60,000	228,000	62,000
Restricted Stock
Diluted:
Dilutive Effect of Stock	36,000	26,000	33,000	20,000