Industry Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Fee revenue and other income:
Income from customers	$ 29,793	$ 28,722
Intersegment income (expense)
Net income	5,539	5,811
Goodwill	11,590	11,590	11,590
Other intangible assets, net	2,661	3,102
Total assets	1,400,748	1,341,927	1,500,731
Information Services [Member]
Fee revenue and other income:
Income from customers	24,274	23,215
Intersegment income (expense)	2,194	2,144
Net income	3,816	4,100
Goodwill	11,454	11,454
Other intangible assets, net	2,661	3,102
Total assets	686,492	672,248
Banking Services [Member]
Fee revenue and other income:
Income from customers	5,519	5,507
Intersegment income (expense)	423	354
Net income	1,723	1,711
Goodwill	136	136
Other intangible assets, net
Total assets	724,292	679,391
Corporate Eliminations and Other [Member]
Fee revenue and other income:
Income from customers
Intersegment income (expense)	(2,617)	(2,498)
Net income
Goodwill
Other intangible assets, net
Total assets	$ (10,036)	$ (9,712)