Dividend or interest rate associated with the financial instrument issued in exchange for the original debt being converted in a noncash or part noncash transaction. Noncash are transactions that affect recognized assets or liabilities but that do not result in cash receipts or cash payments. Part noncash refers to that portion of the transaction not resulting in cash receipts or cash payments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
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-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
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- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

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-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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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.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Subparagraph (SX 210.5-02.17)
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- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
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-Section S99
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-Subparagraph (SX 210.7-03(a)(16))
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-Subparagraph (SX 210.5-02(22))
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Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

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- Definition

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

+ References

No definition available.

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DEBT - Convertable Notes (Details) - 2022 Notes - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		6 Months Ended
	Feb. 05, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Debt,
Aggregate amount of notes	$ 75.0
Stated rate (as a percent)	2.50%
Proceeds from debt, net of issuance costs	$ 74.5
Conversion premium (as a percent)	32.50%
Conversion price (in dollars per share)	$ 8.28
Interest expense		$ 0.5	$ 0.5	$ 1.0	$ 0.8
Fair value		51.3		51.3
Carrying amount		74.6		74.6
Unamortized debt issuance costs		$ 0.4		$ 0.4