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The aggregate of amounts due from customers or clients with the original contractual terms of more than one year, for goods or services that have been delivered or sold in the normal course of business, less allowance for doubtful accounts.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

The current portion of amounts due from customers or clients with the original contractual terms of more than one year for goods or services that have been delivered or sold in the normal course of business.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

No definition available.

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Namespace Prefix:	kub_
Data Type:	xbrli:monetaryItemType
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- Details

Name:	us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amounts due from customers or clients, more than one year from the balance sheet date, for goods or services that have been delivered or sold in the normal course of business.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682