Condensed Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues:
Wireless revenue	$ 30,690	$ 34,351
Software revenue	17,448	15,768
Total revenues	48,138	50,119
Operating expenses:
Cost of revenue	8,813	6,805
Service, rental and maintenance	11,256	11,792
Selling and marketing	7,048	7,246
General and administrative	11,001	12,135
Severance and restructuring	0	20
Depreciation, amortization and accretion	3,747	4,029
Total operating expenses	41,865	42,027
Operating income	6,273	8,092
Interest expense, net	(1)	(67)
Other income, net	60	16
Income before income tax expense	6,332	8,041
Income tax expense	(2,415)	(3,151)
Net income	$ 3,917	$ 4,890
Basic net income per common share (usd per share)	$ 0.18	$ 0.23
Diluted net income per common share (usd per share)	$ 0.18	$ 0.22
Basic weighted average common shares outstanding	21,898,792	21,638,198
Diluted weighted average common shares outstanding	22,053,015	22,037,796
Cash dividends declared per common share (usd per share)	$ 0.125	$ 0.125