Cabot Transaction - Narrative (Details) - Cabot Holdings	Jul. 24, 2018 USD ($) $ / shares
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Change Due to Net Income Attributable to Parent and Effects of Changes, Net [Abstract]
Gain (loss) recognized on transaction	$ 0
Total consideration transferred	414,660,000
Cash consideration	234,101,000
Stock consideration	$ 180,559,000
Stock price at date of transaction (USD per share) \| $ / shares	$ 36.80

Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Cash Consideration

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- Definition

Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Gain (Loss) on Purchase of Interest by Parent

+ References

No definition available.

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- Definition

Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Stock Consideration

+ References

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- References

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- Definition

Represents the purchase by the parent of an additional equity interest in a subsidiary during the period, thereby effecting a change in total (consolidated) equity attributable to the parent. The purchase of the additional equity interest represented by this element increases the parent's controlling interest in the subsidiary.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4M
-URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4591554-111686

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- Definition

Price of a single share of a number of saleable stocks of a company.

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