Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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Segments - Additional Information (Detail)	3 Months Ended
Segments - Additional Information (Detail)	Mar. 31, 2019 USD ($) segment	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| segment	3
Number of operating segments \| segment	0
Revenue	$ 148,817,000	$ 121,333,000
Franchise revenue
Segment Reporting Information [Line Items]
Revenue	65,762,000	54,612,000
Franchise revenue \| Placement Services
Segment Reporting Information [Line Items]
Revenue	2,765,000	2,097,000
Corporate-owned Stores
Segment Reporting Information [Line Items]
Revenue	38,044,000	$ 32,708,000
Corporate-owned Stores \| Canada
Segment Reporting Information [Line Items]
Long-lived assets	1,823,000		$ 1,892,000
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenue	$ 0