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Revenue from Contracts with Customers (Tables)
 12 Months Ended
Dec. 31, 2019
Adoption of ASC606 [Line Items]  
Revenue, Remaining Performance Obligation
Included below is the additional fixed revenue we will earn over the remaining term of the contracts and excludes all variable consideration to be earned with the associated contract as of December 31, 2019.
ContractRemaining Term of Contract2020202120222023 and beyondTotal Remaining Impact to Revenue
Demand fee contracts3-9 years$(3,775) $(3,501) $1,380  36  $(5,860) 
Contract with Customer, Asset and Liability Revenue recognized for these demand fees was $2.6 million and $5.0 million in 2019 and 2018, respectively.
December 31, 2019December 31,
2018		Change
(In thousands)
Contract assets$12,921  $13,164  $(243) 
Contract liabilities7,061  9,881  (2,820) 
Contract assets (liabilities), net$5,860  $3,283  $2,577