Industry Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Fee revenue and other income:
Income from customers	$ 29,299	$ 29,196	$ 58,021	$ 57,630
Intersegment income (expense)
Net income	6,035	6,073	11,846	12,105
Goodwill	11,590	11,590	11,590	11,590	11,590
Other intangible assets, net	2,981	3,463	2,981	3,463
Total assets	1,351,711	1,348,534	1,351,711	1,348,534	1,326,020
Information Services [Member]
Fee revenue and other income:
Income from customers	23,737	23,309	46,952	45,769
Intersegment income (expense)	2,160	2,279	4,302	4,845
Net income	4,280	4,166	8,380	7,859
Goodwill	11,454	11,454	11,454	11,454
Other intangible assets, net	2,981	3,463	2,981	3,463
Total assets	709,693	720,841	709,693	720,841
Banking Services [Member]
Fee revenue and other income:
Income from customers	5,562	5,887	11,069	11,861
Intersegment income (expense)	374	386	730	769
Net income	1,755	1,868	3,466	4,120
Goodwill	136	136	136	136
Other intangible assets, net
Total assets	663,546	641,114	663,546	641,114
Corporate Eliminations and Other [Member]
Fee revenue and other income:
Income from customers
Intersegment income (expense)	(2,534)	(2,665)	(5,032)	(5,614)
Net income		39		126
Goodwill
Other intangible assets, net
Total assets	$ (21,528)	$ (13,421)	$ (21,528)	$ (13,421)