Debt Instrument, Covenant, Maximum Leverage Ratio

No definition available.

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- Definition

Line of Credit, Covenant Threshold, Borrowings Outstanding

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Line of Credit, Covenant Threshold, Intercompany Loans

+ References

No definition available.

+ Details

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- Definition

Line of Credit, Covenant Threshold, Percentage of Commitments in Borrowings Outstanding

+ References

No definition available.

+ Details

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- Definition

Maximum Capital Expenditures And Commitments

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Minimum Fixed Charge Coverage Ratio

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Stock Repurchase Program, Authorized Annual Repurchase Amount

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ 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
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

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Balance Type:	credit
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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.

+ Details

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- Definition

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

+ References

+ Details

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Balance Type:	credit
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- Definition

Weighted average interest rate of long-term debt outstanding calculated at point in time.

+ References

No definition available.

+ Details

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
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-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585

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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Balance Type:	debit
Period Type:	duration

- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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Revolving Credit Facility and Bank Borrowings (Revolving Credit Facilities and Notes Payable) (Details)	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2019	Jun. 30, 2019	Feb. 06, 2019 USD ($)	Feb. 20, 2018 USD ($)
Line of Credit Facility [Line Items]
Weighted average interest rate (percent)	4.69%	2.30%
Amount allowed for repurchase under Amendment	$ 155,700,000					$ 500,000,000.0
Borrowings outstanding	120,000,000	$ 662,000
Revolving credit facilities
Line of Credit Facility [Line Items]
Borrowings outstanding	120,000,000	0
Senior Revolving Credit Facility
Line of Credit Facility [Line Items]
Outstanding letters of credit	600,000
Revolving credit facilities \| Senior Revolving Credit Facility
Line of Credit Facility [Line Items]
Authorized annual share repurchases	250,000,000
Maximum capital expenditures and commitments	70,000,000
Intercompany loans permitted	375,000,000
Borrowings outstanding threshold for financial covenant ratios	$ 40,000,000
Percentage of commitments in average outstanding borrowings (percent)	40.00%
Minimum fixed charge coverage ratio	110.00%
Maximum leverage ratio	3
Current borrowing capacity	$ 250,000,000
Available borrowing capacity	129,400,000	99,400,000
Revolving credit facilities \| Asia Pacific Revolving Credit Facility
Line of Credit Facility [Line Items]
Outstanding borrowings on the Facility	0	0
Borrowings under line of credit	$ 0	$ 0
Base Rate \| Revolving credit facilities \| Senior Revolving Credit Facility
Line of Credit Facility [Line Items]
Margin on variable rate (percent)	0.75%
LIBOR \| Revolving credit facilities \| Senior Revolving Credit Facility
Line of Credit Facility [Line Items]
Margin on variable rate (percent)	1.75%
Required ratios \| Revolving credit facilities \| Senior Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum leverage ratio			2.50	2.75
Subsequent event \| Revolving credit facilities \| Senior Revolving Credit Facility
Line of Credit Facility [Line Items]
Current borrowing capacity					$ 300,000,000