Business Segments (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) segment	Jun. 30, 2014 USD ($)
Business Segments
Number of operating segments | segment			2
Number of reportable segments | segment			2
Business segments, information about operations
Operating revenues	$ 122,345	$ 140,310	$ 243,518	$ 273,037
Operating income	8,057	10,987	11,072	15,566
Interest Expense	1,477	710	2,124	1,437
Interest Income	(9)	(81)	(47)	(129)
Loss on sale	9,501		9,501
Other, net	1,518	1,075	1,110	1,809
Income (loss) from operations before income taxes	(4,430)	9,283	(1,616)	12,449
Operating Segments | Customer Interaction
Business segments, information about operations
Operating revenues	109,175	127,321	218,490	246,055
Operating income	5,042	9,192	6,569	11,142
Operating Segments | Trillium Software
Business segments, information about operations
Operating revenues	13,170	12,989	25,028	26,982
Operating income	4,567	2,749	7,580	6,344
Corporate, Non-Segment
Business segments, information about operations
Operating income	$ (1,552)	$ (954)	$ (3,077)	$ (1,920)