Note 7 - On-balance Sheet Derivative Instruments and Hedging Activities - Adjustments to Other Comprehensive Income (Loss) (Details) - USD ($)	3 Months Ended
Jan. 31, 2018	Jan. 31, 2017
Gains (loss) on interest rate swap, before tax	$ 3,003	$ 15,121
Gains (loss) on interest rate swap, tax	(841)	(6,048)
Gains (loss) on interest rate swap, net of tax	2,162	9,073
Reclassification adjustment for (gain) loss in income, before tax	(1,692)	7,015
Reclassification adjustment for (gain) loss in income, tax	474	(2,806)
Reclassification adjustment for loss in income, net of tax	(1,218)	4,209
Net unrealized gain (loss), before tax	1,311	22,136
Net unrealized gain (loss), tax	(367)	(8,854)
Net unrealized gain (loss), net of tax	$ 944	$ 13,282

Amount before tax, after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount of tax expense (benefit), after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount before tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount after tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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