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Commitments and Contingencies - Other (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Other commitments
Deferred compensation plan liability	$ 0.2		$ 0.2		$ 0.0
Deferred compensation plan assets	0.2		0.2		$ 0.0
Agreement with the Regents
Other commitments
Minimum required annual payment of the commitment obligation, based on net sales of current and future products	0.5		0.5
Cost of sales | Agreement with the Regents
Other commitments
Commitment obligation payments	$ 1.0	$ 0.7	$ 1.9	$ 1.3

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- Definition

Represents the payments made on the other commitment obligation.

+ References

No definition available.

+ Details

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- Definition

Represents the minimum required annual payment of the commitment obligation, based on net sales of current and future products.

+ References

No definition available.

+ Details

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer).

+ References

No definition available.

+ Details

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- Definition

Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

+ References

Reference 1: 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

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- Definition

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.

+ References

No definition available.

+ Details

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- Details

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