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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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.

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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.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Balance Sheet Account Detail - Financial Instruments Not Recorded at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Aug. 09, 2018	Nov. 02, 2015
Debt Instrument [Line Items]
Carrying value	$ 172,060	$ 198,078
Long-term debt, fair value	157,856	168,626
Term loan facility
Debt Instrument [Line Items]
Carrying value	141,273	117,880
Long-term debt, fair value	131,892	116,916
Convertible notes
Debt Instrument [Line Items]
Carrying value	26,506	75,917
Long-term debt, fair value	24,548	50,489
Other debt
Debt Instrument [Line Items]
Carrying value	4,281	4,281
Long-term debt, fair value	$ 1,416	$ 1,221
Convertible Senior Notes Due 2020
Debt Instrument [Line Items]
Debt instrument, stated interest rate	3.25%		3.25%
Convertible Senior Notes Due 2020 \| Convertible notes
Debt Instrument [Line Items]
Debt instrument, stated interest rate			3.25%	3.25%