Related Party Transactions - Transactions with Related Parties (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Transaction [Abstract]
Total revenues	[1],[2]	$ 43,212	$ 41,701	$ 84,274	$ 82,307
Cost of revenues		504	595	1,090	756
Rent and other fees		1,974	2,084	3,967	4,001
Interest earned from and charged by affiliate
Interest income		$ 43	$ 50	$ 87	$ 102

[1] Includes revenues generated from investee accounted for under the equity method of $0.5 million and $1.1 million for the three and six months ended June 30, 2015, respectively, and $0.7 million and $1.4 million for the corresponding 2014 periods.

[2] Total revenues from Popular as a percentage of revenues were 46%, 45%, 45% and 45% for each of the periods presented above.