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, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2014	Oct. 31, 2013
Equity [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount									117,000	225,000
Net income available to common stockholders	$ 1,027	$ 8,349	$ 8,129	$ 4,939	$ 6,456	$ 5,282	$ 7,249	$ 2,583	$ 22,444	$ 21,570
Basic weighted average number of common shares	17,180,000	17,118,000	17,081,000	17,113,000	16,999,000	17,007,000	16,998,000	16,988,000	17,145,000	16,982,000
Stock options									70,000	48,000
Diluted weighted average number of common shares	17,229,000	17,175,000	17,158,000	17,208,000	17,052,000	17,051,000	17,043,000	17,040,000	17,215,000	17,030,000
Basic earnings per share	$ 0.06	$ 0.49	$ 0.48	$ 0.29	$ 0.38	$ 0.31	$ 0.43	$ 0.15	$ 1.31	$ 1.27
Diluted earnings per share	$ 0.06	$ 0.49	$ 0.47	$ 0.29	$ 0.38	$ 0.31	$ 0.43	$ 0.15	$ 1.30	$ 1.27