Industry Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Fee revenue and other income:
Income from customers	$ 30,120	$ 29,299	$ 59,913	$ 58,021
Intersegment income (expense)
Net income	$ 5,548	$ 6,035	$ 11,087	$ 11,846
Goodwill	11,590	11,590	11,590	11,590	$ 11,590
Other intangible assets, net	2,597	2,981	2,597	2,981
Total assets	1,366,880	1,351,711	1,366,880	1,351,711	$ 1,500,731
Information Services [Member]
Fee revenue and other income:
Income from customers	24,152	23,737	48,426	46,952
Intersegment income (expense)	2,350	2,160	4,544	4,302
Net income	3,591	4,280	7,407	8,380
Goodwill	11,454	11,454	11,454	11,454
Other intangible assets, net	2,597	2,981	2,597	2,981
Total assets	709,754	709,693	709,754	709,693
Banking Services [Member]
Fee revenue and other income:
Income from customers	5,968	5,562	11,487	11,069
Intersegment income (expense)	433	374	856	730
Net income	1,957	1,755	3,680	3,466
Goodwill	$ 136	$ 136	$ 136	$ 136
Other intangible assets, net
Total assets	$ 675,777	$ 663,546	$ 675,777	$ 663,546
Corporate Eliminations and Other [Member]
Fee revenue and other income:
Income from customers
Intersegment income (expense)	$ (2,783)	$ (2,534)	$ (5,400)	$ (5,032)
Net income
Goodwill
Other intangible assets, net
Total assets	$ (18,651)	$ (21,528)	$ (18,651)	$ (21,528)