Goodwill and Other Intangible Assets - Summary of Other Intangible Assets and Related Accumulated Amortization (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Acquisition intangibles, gross	$ 97,046	$ 97,209
Accumulated amortization	(58,060)	(51,489)
Acquisition intangibles, net	38,986	45,720
Post acquisition software development costs	36,701	36,701
Accumulated amortization	(36,701)	(36,621)
Post acquisition software costs, net		80
Total other intangibles	38,986	45,800
Customer related intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Acquisition intangibles, gross	60,547	60,547
Accumulated amortization	(28,864)	(24,554)
Software acquired [Member]
Finite-Lived Intangible Assets [Line Items]
Acquisition intangibles, gross	32,003	32,003
Accumulated amortization	(26,584)	(24,505)
Trade name [Member]
Finite-Lived Intangible Assets [Line Items]
Acquisition intangibles, gross	3,109	3,272
Accumulated amortization	(1,225)	(1,182)
Lease acquired [Member]
Finite-Lived Intangible Assets [Line Items]
Acquisition intangibles, gross	1,387	1,387
Accumulated amortization	$ (1,387)	$ (1,248)