Segment Information - Income from Segments to Consolidated Net Income (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Segment income from operations
Income from operations	$ 30,592	$ 26,566
Interest expense, net	(6,851)	(5,791)
Earnings (losses) of equity method investment	143	(130)
Other income	1,274	398
Income tax expense	(2,020)	(1,876)
Net income	23,138	19,167
Operating Segments
Segment income from operations
Income from operations	37,792	34,082
Operating Segments \| Merchant Acquiring, net
Segment income from operations
Income from operations	6,908	8,425
Operating Segments \| Payment Processing
Segment income from operations
Income from operations	17,233	12,414
Operating Segments \| Business Solutions
Segment income from operations
Income from operations	13,651	13,243
Other
Segment income from operations
Income from operations	$ (7,200)	$ (7,516)

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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