Segment Information and Revenues - Segment Information and Revenues - Disaggregation of Revenues (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Total revenue	$ 754,952	$ 717,945	$ 560,456
Tax Preparation
Disaggregation of Revenue [Line Items]
Total revenue	208,763	209,966	187,282
Tax Preparation | Recognized Upon Transaction
Disaggregation of Revenue [Line Items]
Total revenue	206,254	205,054	184,811
Tax Preparation | Recognized Over Time
Disaggregation of Revenue [Line Items]
Total revenue	2,509	4,912	2,471
Tax Preparation | Consumer
Disaggregation of Revenue [Line Items]
Total revenue	192,226	195,004	172,207
Tax Preparation | Consumer | Recognized Upon Transaction
Disaggregation of Revenue [Line Items]
Total revenue	192,223	192,438	172,207
Tax Preparation | Consumer | Recognized Over Time
Disaggregation of Revenue [Line Items]
Total revenue	3	2,566	0
Tax Preparation | Professional
Disaggregation of Revenue [Line Items]
Total revenue	16,537	14,962	15,075
Tax Preparation | Professional | Recognized Upon Transaction
Disaggregation of Revenue [Line Items]
Total revenue	14,031	12,616	12,604
Tax Preparation | Professional | Recognized Over Time
Disaggregation of Revenue [Line Items]
Total revenue	$ 2,506	$ 2,346	$ 2,471