Note 3 - Revenue Recognition - Contract Balances Subject to ASC 606 (Details) - USD ($)	Feb. 28, 2019	Dec. 01, 2018	Nov. 30, 2018
Accounts receivable	$ 76,577	$ 36,337
Total Assets	76,577	36,337	$ 36,337
Contract liabilities - current	603,909	647,594
Contract liabilities - long-term	102,286	106,948
Total Contract Liabilities	$ 706,195	$ 754,542	$ 754,542

Represents the accounts receivable included in asset from contract with customer.

No definition available.

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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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