Industry Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Fee revenue and other income:
Income from customers	$ 30,290	$ 30,769
Intersegment income (expense)
Net income	6,307	5,833
Goodwill	11,590	11,590	$ 11,590
Other intangible assets, net	2,971	2,303
Total assets	1,447,006	1,377,018	$ 1,504,839
Information Services [Member]
Fee revenue and other income:
Income from customers	23,646	23,558
Intersegment income (expense)	2,964	3,258
Net income	3,824	2,947
Goodwill	11,454	11,454
Other intangible assets, net	2,971	2,303
Total assets	747,301	663,487
Banking Services [Member]
Fee revenue and other income:
Income from customers	6,644	7,211
Intersegment income (expense)	361	376
Net income	2,483	2,886
Goodwill	136	136
Other intangible assets, net
Total assets	715,753	718,234
Corporate Eliminations and Other [Member]
Fee revenue and other income:
Income from customers
Intersegment income (expense)	(3,325)	(3,634)
Net income
Goodwill
Other intangible assets, net
Total assets	$ (16,048)	$ (4,703)