Debt Conversion, Number of Shares of Common Stock Convertible per $1,000 of Principal Notes

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- Definition

Debt Instrument, Convertible, Threshold Percentage Of Stock Price Trigger, Five Business Days

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- Definition

Debt issuance costs, equity component

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No definition available.

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- Definition

Debt issuance costs, liability component

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- Definition

Nonconvertible Debt Borrowing Rate at the Date of Issuance

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No definition available.

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- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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- Definition

Amount of amortization expense attributable to debt issuance costs.

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- Definition

Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

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- Definition

Carrying amount of long-term convertible debt as of the balance sheet date, net of the amount due in the next twelve months or greater than the normal operating cycle, if longer. The debt is convertible into another form of financial instrument, typically the entity's common stock.

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- Definition

The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

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- Definition

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

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- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

+ References

No definition available.

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- Definition

Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

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No definition available.

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- Definition

Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

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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.

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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.

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No definition available.

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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- Definition

Amount, after accumulated amortization, of debt discount.

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- Definition

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

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- Definition

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

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- Definition

Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings, excluding amortization of debt discount (premium) and financing costs.

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- 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

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.

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DEBT (Details - Convertible Senior Notes) $ / shares in Units, $ in Thousands		9 Months Ended
	May 31, 2017 USD ($) day $ / shares Rate shares	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Debt Instrument [Line Items]
Aggregate principal amount of convertible senior notes	$ 300,000	$ 299,997		$ 300,000
Annual interest rate on convertible senior notes \| Rate	0.625%
Initial conversion rate, shares per $1,000 principal amount of notes \| shares	4.8163
Initial conversion price per share \| $ / shares	$ 207.63
Conversion rate, sales price of common stock as a percentage of the conversion price \| Rate	130.00%
Threshold trading days \| day	5
Threshold consecutive trading days \| day	5
Conversion rate, sales price of common stock as a percentage of the conversion price, five business days \| Rate	98.00%
Cash repurchase at a price equal to the principal amount of the notes, Percentage \| Rate	100.00%
Nonconvertible debt borrowing rate at the date of issuance \| Rate	5.36%
Debt component of the principal amount of the Convertible Senior Notes	$ 238,400
Equity component of the principal amount of the Convertible Senior Notes	61,600
Financing costs related to the issuance of the Convertible Senior Notes	9,300
Debt issuance costs, liability component	7,400	4,178		5,252
Debt issuance costs, equity component	$ 1,900
Total interest expense on the Convertible Senior Notes		11,500	$ 10,900
Interest expense recognized associated with the 0.625% coupon rate		1,400	1,400
Amortization of convertible debt discount		8,959	8,497
Amortization of debt issuance costs		1,463	1,308
Long-term debt		260,973		250,943
Fair value of the Convertible Senior Notes using a Level 1 observable input		482,700
Unamortized debt discount		34,846		$ 43,805
Convertible Notes Payable [Member]
Debt Instrument [Line Items]
Amortization of debt issuance costs		$ 1,100	$ 1,000