Condensed Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues:
Service, rental and maintenance, net of service credits	$ 35,541	$ 39,795	$ 109,318	$ 123,387
Software revenue and other	14,128	15,321	45,749	44,425
Total revenues	49,669	55,116	155,067	167,812
Operating expenses:
Cost of revenue	5,359	5,105	16,027	15,137
Service, rental and maintenance	12,552	13,731	38,406	41,926
Selling and marketing	6,235	6,043	18,798	17,615
General and administrative	12,131	12,466	37,168	38,129
Severance and restructuring	0	0	2	46
Depreciation, amortization and accretion	3,858	4,724	11,487	13,845
Total operating expenses	40,135	42,069	121,888	126,698
Operating income	9,534	13,047	33,179	41,114
Interest expense, net	(68)	(64)	(196)	(318)
Other (expense) income, net	84	52	90	426
Income before income tax expense	9,550	13,035	33,073	41,222
Income tax expense	(3,788)	(4,987)	(13,558)	(16,265)
Net income	$ 5,762	$ 8,048	$ 19,515	$ 24,957
Basic net income per common share	$ 0.27	$ 0.37	$ 0.90	$ 1.13
Diluted net income per common share	$ 0.26	$ 0.36	$ 0.89	$ 1.11
Basic weighted average common shares outstanding	21,629,289	21,973,473	21,653,692	22,069,785
Diluted weighted average common shares outstanding	21,919,238	22,399,934	21,916,063	22,534,127
Cash dividends declared per common share	$ 0.125	$ 0.125	$ 0.375	$ 0.625