Other Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets and Indefinite-Lived Assets [Line Items]
Gross Amount	$ 73,304
Accumulated Amortization	63,753
Net	9,551
Intangible Assets, Net (Excluding Goodwill)	14,051	3,275
Customer relationships
Finite-Lived Intangible Assets and Indefinite-Lived Assets [Line Items]
Gross Amount	34,753
Accumulated Amortization	30,168
Net	4,585
Developed technology
Finite-Lived Intangible Assets and Indefinite-Lived Assets [Line Items]
Gross Amount	28,949
Accumulated Amortization	24,554
Net	4,395
Patents, trademarks and tradenames
Finite-Lived Intangible Assets and Indefinite-Lived Assets [Line Items]
Gross Amount	3,965
Accumulated Amortization	3,558
Net	407
Servicing contracts and other
Finite-Lived Intangible Assets and Indefinite-Lived Assets [Line Items]
Gross Amount	5,637
Accumulated Amortization	5,473
Net	$ 164