Credit Agreement Expiration Trigger Requirement, Convertible Note Outstanding Balance

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- Definition

Debt Instrument, Convertible, Gross Amount of Equity Component

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- Definition

Debt Instrument, Convertible, Initial Conversion Rate

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Up-front costs to purchase hedge instruments, net of cash received from sale of warrants

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LIBOR Interest Rate Floor

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

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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

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

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

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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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No definition available.

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

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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No definition available.

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The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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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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Exercise or strike price stated in the contract for options indexed to the issuer's equity shares.

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Long Term Debt Additional Information (Details) - USD ($)		3 Months Ended		6 Months Ended
	Jan. 29, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Feb. 07, 2019
Debt Instrument [Line Items]
Amortization of debt discount		$ 2,500,000	$ 2,300,000	$ 4,810,000	$ 3,774,000
Term Loan Facility [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		248,400,000		248,400,000
Long-term Debt		246,740,000		246,740,000		$ 253,535,000
Term Loan Facility [Member] \| Amended and Restated Senior Credit Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount							$ 265,000,000.0
Line of Credit [Member]
Debt Instrument [Line Items]
Long-term Debt		258,000,000		258,000,000		$ 220,000,000
Line of Credit Facility, Remaining Borrowing Capacity		324,500,000		324,500,000
Line of Credit [Member] \| Amended and Restated Senior Credit Agreement [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity							585,000,000.0
Letter of Credit [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount		2,500,000		2,500,000
Convertible Notes Payable [Member] \| 2.625 Percent Convertible Notes Due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 345,000,000.0
Debt Instrument, Convertible, Carrying Amount of Equity Component	$ 39,100,000
Interest rate, stated percentage	2.625%
Credit Agreement Expiration Trigger Requirement, Convertible Note Outstanding Balance							$ 150,000,000.0
Debt Instrument, Interest Rate, Effective Percentage	6.14%
Interest Expense, Debt		$ 2,300,000	$ 2,300,000	$ 4,500,000	$ 3,800,000
Debt Instrument, Convertible, Gross Amount of Equity Component	$ 51,600,000
Debt Instrument, Convertible, Initial Conversion Rate	11.2608
Conversion price (in dollars per share)	$ 88.80
Option indexed to issuer's equity, strike price (in dollars per share)	$ 114.92
Long-term Debt [Member] \| Amended and Restated Senior Credit Agreement [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage				0.50%
Debt Instrument, Interest Rate, Effective Percentage		4.50%		4.50%
LIBOR Interest Rate Floor				1.00%
London Interbank Offered Rate (LIBOR) [Member] \| Long-term Debt [Member] \| Amended and Restated Senior Credit Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate				3.50%
Fed Funds Effective Rate Overnight Index Swap Rate [Member] \| Long-term Debt [Member] \| Amended and Restated Senior Credit Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate				2.50%
Eurodollar [Member] \| Long-term Debt [Member] \| Amended and Restated Senior Credit Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate				3.50%
Call Option [Member]
Debt Instrument [Line Items]
Hedge and warrant transactions, net cash paid	$ 21,000,000.0