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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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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
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-SubTopic 210
-Section S99
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Debt Commitments - Note Payable Under Asset Purchase Agreement (Details) - USD ($) $ in Millions		1 Months Ended
	Dec. 07, 2015	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Consideration for Apex asset purchase agreement	$ 27.0
Cash paid for Apex asset purchase agreement		$ 5.0	$ 5.0	$ 5.0	$ 12.0
Debt		415.0		390.0
Note Payable Under Asset Purchase Agreement [Member]
Debt Instrument [Line Items]
Debt		$ 0.0		$ 10.0	$ 15.0
Fixed interest rate per annum		0.56%