Debt Instrument, Convertible, Conversion Price, Settlement

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- Definition

Debt Instrument, Covenant, Minimum Cash Balance

+ References

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- Definition

Debt Instrument, Floor Interest Rate

+ References

No definition available.

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- Definition

Debt, Transfer, Amount

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- Definition

Non-cash Interest Expense

+ References

No definition available.

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- Definition

Adjustment to additional paid in capital resulting from the recognition of convertible debt instruments as two separate components - a debt component and an equity component. This bifurcation may result in a basis difference associated with the liability component that represents a temporary difference for purposes of applying accounting for income taxes. The initial recognition of deferred taxes for the tax effect of that temporary difference is as an adjustment to additional paid in capital.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 25
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=51819886&loc=SL6014347-161799

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ 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 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

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

+ References

+ Details

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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 discount.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

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- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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-Publisher FASB
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Debt (Details Textual) - USD ($)				1 Months Ended	3 Months Ended		6 Months Ended
Debt (Details Textual) - USD ($)	Jul. 16, 2018	Jun. 01, 2018	Apr. 27, 2018	Apr. 30, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Dec. 22, 2014	Dec. 16, 2014
Debt Instrument [Line Items]
Partial extinguishment of equity component of Convertible 3.75% Senior Notes							$ 7,600,000
Partial extinguishment of Convertible 3.75% Senior Notes					$ 2,467,000	$ 0	2,467,000	$ 0
Qualified Institutional Buyers
Debt Instrument [Line Items]
Face amount of the Notes										$ 18,750,000.00	$ 125,000,000
Convertible Note 2019
Debt Instrument [Line Items]
Face amount of the Notes					$ 68,660,000		$ 68,660,000		$ 143,750,000
Stated interest rate					3.75%		3.75%		3.75%
Debt, transfer				$ 75,100,000
Non-cash interest expense				10,100,000	$ 2,500,000
Partial extinguishment of Convertible 3.75% Senior Notes				$ 75,100,000
Convertible Note 2019 \| Convertible Notes Payable
Debt Instrument [Line Items]
Stated interest rate					3.75%		3.75%				3.75%
Debt, transfer			$ 75,100,000				$ 75,100,000
Partial extinguishment of Convertible 3.75% Senior Notes			$ 75,100,000
Convertible Note 2023
Debt Instrument [Line Items]
Face amount of the Notes					$ 75,090,000		$ 75,090,000
Stated interest rate					4.75%		4.75%		4.75%
Partial extinguishment of equity component of Convertible 3.75% Senior Notes							$ (7,602,000)
Convertible Note 2023 \| Convertible Notes Payable
Debt Instrument [Line Items]
Stated interest rate			4.75%		4.75%		4.75%
Debt, transfer			$ 75,100,000				$ 75,100,000
Initial conversion price (dollars per share)			$ 224.71
Settlement conversion price (dollars per share)			$ 280.90
Debt issuance costs			$ 1,600,000.0
Unamortized discount			$ 19,000,000
Interest rate, effective percentage			12.10%
Term Loan 2021
Debt Instrument [Line Items]
Face amount of the Notes		$ 25,000,000			$ 15,000,000		$ 15,000,000
Debt issuance costs		500,000
Unamortized discount		$ 400,000
Interest rate, effective percentage		13.56%
Covenant, minimum cash balance		$ 5,000,000
Proceeds from lines of credit		$ 15,000,000
Floor interest rate		2.00%
London Interbank Offered Rate (LIBOR) \| Term Loan 2021
Debt Instrument [Line Items]
Basis spread on variable rate		9.00%
Subsequent Event \| Term Loan 2021
Debt Instrument [Line Items]
Proceeds from lines of credit	$ 10,000,000