Revenue Recognition - Summary of Revenue from Prepaid Gift Cards Expected to be Recognized in Future Related to Performance Obligation Unsatisfied or Partially Satisfied (Details) $ in Thousands	Mar. 31, 2020 USD ($)
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation, amount	$ 8,058
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-04-01
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation, amount	$ 3,875
Revenue, remaining performance obligation, expected timing of satisfaction, period	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-01-01
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation, amount	$ 2,366
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-01-01
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation, amount	$ 966
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2023-01-01
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation, amount	$ 382
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2024-01-01
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation, amount	$ 267
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2025-01-01
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation, amount	$ 202
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year