pre_text: Contract Liabilities Contract liabilities include payments received in advance of performance under the contract, and are realized with the associated revenue recognized under the contract. The changes in our contract liabilities are as follows (in thousands): The revenue recognized from amounts included in contract liabilities primarily relates to prepayment contracts with customers as well as payments of activation fees.
table: Year Ended December 31,
table: 2019 2018
table: Beginning of period balance $11,176 $12,678
table: Revenue deferred and acquired in current period 6,127 3,954
table: Revenue recognized from amounts included in contract liabilities (6,805) (5,456)
table: End of period balance $10,498 $11,176
question: Analyse this data from a financial earnings document. What was the change in Revenue deferred and acquired in current period between 2018 and 2019?