Revenue From Contracts With Customers (Tables)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table provides information about disaggregated revenue by type of product and contract for 2019 and 2018:

	For the Year Ended December 31, 2019		For the Year Ended December 31, 2018
	(Dollars in thousands)
Graphite Electrodes - Three- to five-year take-or-pay contracts	$	1,437,354	$	1,341,557
Graphite Electrodes - Short-term agreements and spot sales	260,979		395,928
By-products and other	92,460		158,425
Total Revenues	$	1,790,793	$	1,895,910

Contract with Customer, Asset and Liability

Current deferred revenue is included in "Other accrued liabilities" and long-term deferred revenue is included in "Other long-term obligations" on the Consolidated Balance Sheets. The following table provides information about deferred revenue from contracts with customers (in thousands):

	Current deferred revenue			Long-Term deferred revenue
	(Dollars in thousands)
Balance as of December 31, 2017	$	20,784		$	—
Increases due to cash received	15,548			8,241
Revenue recognized	(30,803		)	—
Foreign currency impact	(149		)	(525		)
Balance as of December 31, 2018	5,380			7,716
Increases due to cash received	7,961			—
Revenue recognized	(4,678		)	—
Revision of estimates	—			(694		)
Reclassification between long-term and current	3,042			(3,042		)
Foreign currency impact	71			(122		)
Balance as of December 31, 2019	$	11,776		$	3,858

Remaining Performance Obligation, Expected Timing of Satisfaction\

The following table presents estimated revenues expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisfied) at the end of the reporting period (in thousands). The estimated revenues do not include contracts with original duration of one year or less.

	Three- to five-year take-or-pay contracts
	(Dollars in thousands)
2020	$	1,251,093
2021	1,211,036
2022	1,144,574
2023 and thereafter	29,461
Total	$	3,636,164