Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2017 USD ($) bank shares	Apr. 20, 2017 USD ($)	Dec. 31, 2016 USD ($)
Organization Consolidation and Presentation of Financial Statements [Line Items]
Number of commercial banks requiring cash collateral (in banks) | bank	1
Period of payments collection from large financial institutions (in days)	30 days
Subscription period (in years)	1 year
Insurance premiums	$ 367,000		$ 360,000
Goodwill	$ 9,763,000		9,763,000
Expected dividend yield of options granted (as a percent)	0.00%
Expected volatility of options granted (as a percent)	45.00%
Risk-free interest rate of options granted (as a percent)	1.10%
Expected term of options granted (in years)	4 years 9 months 18 days
Measurement period for historical data (in years)	3 years
Insurance And Other Consumer Services
Organization Consolidation and Presentation of Financial Statements [Line Items]
Goodwill	$ 347,000		347,000
Personal Information Services
Organization Consolidation and Presentation of Financial Statements [Line Items]
Goodwill	9,416,000		$ 9,416,000
Other Reporting Units
Organization Consolidation and Presentation of Financial Statements [Line Items]
Goodwill	0
Minimum
Organization Consolidation and Presentation of Financial Statements [Line Items]
Subscription price per month	$ 4.99
Intangible assets, estimated useful lives (in years)	2 years
Maximum
Organization Consolidation and Presentation of Financial Statements [Line Items]
Subscription price per month	$ 25.00
Intangible assets, estimated useful lives (in years)	10 years
Performance Shares
Organization Consolidation and Presentation of Financial Statements [Line Items]
Granted, Number of RSUs (in shares) | shares	0
New Credit Agreement | Subsequent Event
Organization Consolidation and Presentation of Financial Statements [Line Items]
Debt instrument, face amount		$ 20,000,000.0