Property and Equipment, Net (Detail) (USD $) In Thousands, unless otherwise specified			9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Buildings [Member]	Sep. 30, 2014 Data Processing Equipment [Member] Minimum [Member]	Sep. 30, 2014 Data Processing Equipment [Member] Maximum [Member]	Sep. 30, 2014 Furniture and Equipment [Member] Minimum [Member]	Sep. 30, 2014 Furniture and Equipment [Member] Maximum [Member]	Sep. 30, 2014 Leasehold Improvements [Member] Minimum [Member]	Sep. 30, 2014 Leasehold Improvements [Member] Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life			30 years	3 years	5 years	3 years	20 years	5 years	10 years
Buildings	$ 1,600	$ 1,726
Data processing equipment	73,199	68,273
Furniture and equipment	8,200	6,385
Leasehold improvements	2,896	2,880
Property and equipment	85,895	79,264
Less - accumulated depreciation and amortization	(57,832)	(47,555)
Depreciable assets, net	28,063	31,709
Land	1,419	1,531
Property and equipment, net	$ 29,482	$ 33,240