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The ceiling quantity for the second tier of base overriding royalties earned. Shipments up to this amount, above the first tier ceiling, are subject to the second tier portion percentage in calculating the royalties earned.

No definition available.

Name:	msb_RevenueCeilingQuantityForSecondTierOfConsideration
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The number of volume thresholds used to determine the transaction price.

No definition available.

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The percentage applied to the quantity shipped in the first tier, to determine the quantity on which royalties are earned.

No definition available.

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The percentage applied to the quantity shipped in the second tier, to determine the quantity on which royalties are earned.

No definition available.

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The percentage applied to the quantity shipped in the third tier, to determine the quantity on which royalties are earned.

No definition available.

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The threshold quantity for the third tier of base overriding royalties earned. Shipments above this amount are subject to the third tier portion percentage in calculating the royalties earned.

No definition available.

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The quantity shipped which serves as a threshold to determine transaction price.

No definition available.

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Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 606
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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, classified as current.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References

No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Number of shares issued which are neither cancelled nor held in the treasury.

No definition available.