Industry Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Revenue from customers	$ 28,407	$ 26,603	$ 56,841	$ 52,683
Intersegment revenue	0	0	0	0
Net income	5,962	5,739	11,870	11,458
Goodwill	11,590	7,471	11,590	7,471	7,471
Other intangible assets, net	4,052	214	4,052	214
Total assets	1,291,260	1,287,698	1,291,260	1,287,698	1,319,301
Information Services [Member]
Revenue from customers	22,173	20,690	44,721	40,536
Intersegment revenue	2,744	2,473	5,284	5,099
Net income	5,814	3,710	11,548	7,262
Goodwill	11,454	7,335	11,454	7,335
Other intangible assets, net	4,052	214	4,052	214
Total assets	714,747	705,956	714,747	705,956
Banking Services [Member]
Revenue from customers	6,234	5,913	12,120	12,147
Intersegment revenue	415	484	843	941
Net income	2,213	2,029	4,244	4,196
Goodwill	136	136	136	136
Other intangible assets, net	0	0	0	0
Total assets	600,553	595,471	600,553	595,471
Corporate Eliminations and Other [Member]
Revenue from customers	0	0	0	0
Intersegment revenue	(3,159)	(2,957)	(6,127)	(6,040)
Net income	(2,065)	0	(3,922)	0
Goodwill	0	0	0	0
Other intangible assets, net	0	0	0	0
Total assets	$ (24,040)	$ (13,729)	$ (24,040)	$ (13,729)