Earnings Per Share Reconciliation of Numerator and Denominator of the basic and diluted earnings per share computation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Equity [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount									225,000	337,000
Net income available to common stockholders	$ 6,456	$ 5,282	$ 7,249	$ 2,583	$ 3,626	$ 2,416	$ 5,905	$ 1,579	$ 21,570	$ 13,526
Basic weighted average number of common shares	16,999,000	17,007,000	16,998,000	16,988,000	16,857,000	16,856,000	16,844,000	16,765,000	16,982,000	16,813,000
Stock options									48,000	91,000
Diluted weighted average number of common shares	17,052,000	17,051,000	17,043,000	17,040,000	16,934,000	16,927,000	16,903,000	16,856,000	17,030,000	16,904,000
Basic earnings per share	$ 0.38	$ 0.31	$ 0.43	$ 0.15	$ 0.22	$ 0.14	$ 0.35	$ 0.09	$ 1.27	$ 0.80
Diluted earnings per share	$ 0.38	$ 0.31	$ 0.43	$ 0.15	$ 0.21	$ 0.14	$ 0.35	$ 0.09	$ 1.27	$ 0.80