Industry Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Revenue from customers	$ 27,911	$ 27,331	$ 84,752	$ 80,014
Intersegment revenue	0	0	0	0
Net income	6,092	6,060	17,962	17,518
Goodwill	11,590	7,471	11,590	7,471	7,471
Other intangible assets, net	3,905	187	3,905	187
Total assets	1,391,235	1,405,658	1,391,235	1,405,658	1,319,301
Information Services [Member]
Revenue from customers	21,727	21,414	66,448	61,950
Intersegment revenue	2,842	2,539	8,126	7,638
Net income	5,889	3,968	17,437	11,230
Goodwill	11,454	7,335	11,454	7,335
Other intangible assets, net	3,905	187	3,905	187
Total assets	774,476	794,998	774,476	794,998
Banking Services [Member]
Revenue from customers	6,184	5,917	18,304	18,064
Intersegment revenue	408	466	1,251	1,407
Net income	2,367	2,092	6,611	6,288
Goodwill	136	136	136	136
Other intangible assets, net	0	0	0	0
Total assets	634,564	623,706	634,564	623,706
Corporate Eliminations and Other [Member]
Revenue from customers	0	0	0	0
Intersegment revenue	(3,250)	(3,005)	(9,377)	(9,045)
Net income	(2,164)	0	(6,086)	0
Goodwill	0	0	0	0
Other intangible assets, net	0	0	0	0
Total assets	$ (17,805)	$ (13,046)	$ (17,805)	$ (13,046)