Debt Instrument, Basis Spread on Variable Rate, Increase (Decrease)

No definition available.

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

+ Details

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- Definition

Incremental percentage increase (decrease) in the stated rate on a debt instrument.

+ References

No definition available.

+ Details

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- Definition

The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

+ Details

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- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

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- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Definition

Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands							1 Months Ended	3 Months Ended		9 Months Ended	12 Months Ended
	Feb. 12, 2021	Feb. 03, 2021	Jan. 20, 2021	Dec. 20, 2019	Dec. 05, 2019	Feb. 13, 2019	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Aug. 13, 2018	Apr. 26, 2018	Apr. 23, 2018
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Declared								$ 0.085	$ 0.0645	$ 0.01	$ 0.115	$ 0.34	$ 0.9345
Sale of Stock, Transaction Date					11,175,927
Sale of Stock, Price Per Share					$ 13.125									$ 20.00	$ 15	$ 15
Repayments of Secured Debt											$ 896,214	$ 350,140	$ 56,372
2018 Term Loan Facility [Member]
Subsequent Event [Line Items]
Repayments of Secured Debt				$ 225,000		$ 125,000					$ 820,000
2018 Term Loan Facility [Member] \| Senior Subordinated Notes [Member]
Subsequent Event [Line Items]
Repayments of Secured Debt							$ 500,000
GrafTech International Ltd [Member] \| Brookfield [Member]
Subsequent Event [Line Items]
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions											55.30%
Subsequent Events
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Declared		$ 0.01
Sale of Stock, Transaction Date			20,000,000
Sale of Stock, Price Per Share			$ 10.90
Subsequent Events \| 2018 Term Loan Facility [Member] \| Line of Credit [Member] \| Minimum [Member]
Subsequent Event [Line Items]
Debt Instrument, Interest Rate, Increase (Decrease)	0.50%
Subsequent Events \| 2018 Term Loan Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Line of Credit [Member]
Subsequent Event [Line Items]
Debt Instrument, Basis Spread on Variable Rate, Increase (Decrease)	0.50%
Subsequent Events \| 2018 Term Loan Facility [Member] \| Senior Subordinated Notes [Member]
Subsequent Event [Line Items]
Repayments of Secured Debt	$ 150,000
Subsequent Events \| GrafTech International Ltd [Member] \| Brookfield [Member]
Subsequent Event [Line Items]
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions			47.80%