Related Party Transactions - Transactions with Related Parties (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Transactions with Third Party
Total revenues	$ 47,216	$ 44,090	$ 139,954	$ 134,045
Cost of revenues	840	1,775	2,192	2,610
Rent and other fees	2,016	1,962	5,984	5,810
Interest earned from affiliate
Interest income	37	41	101	119
Revenues generated from investee accounted for under equity method	$ 300	$ 400	$ 1,000	$ 1,500
Popular \| Customer Concentration Risk \| Total Revenue
Interest earned from affiliate
Total percentage of revenues from Popular	42.00%	42.00%	41.00%	43.00%

Interest earned from and charged by affiliates.

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Rent And Other Fees Paid To Related Party

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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The amount of revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity.

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Amount of interest income earned from interest-bearing assets owed to the entity by related party.

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Direct costs arising from transactions with related parties who are not affiliates or joint Ventures. These costs are categorized as cost of goods sold.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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