Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Operating segment revenues and profitability
Net revenue	$ 37,054	$ 31,645
Costs of revenue	19,073	16,468
Gross profit	17,981	15,177
Gross margin	49.00%	48.00%
Operating expenses:
Direct selling and marketing	9,570	7,955
Direct research and development	3,474	2,539
Indirect	6,040	5,744
(Loss) income from operations	(1,103)	(1,061)
Software
Operating segment revenues and profitability
Net revenue	20,009	16,172
Costs of revenue	8,235	6,435
Gross profit	11,774	9,737
Gross margin	59.00%	60.00%
Operating expenses:
Direct selling and marketing	8,813	6,963
Direct research and development	3,474	2,539
Indirect	5,266	4,745
(Loss) income from operations	(5,779)	(4,510)
Network Connectivity
Operating segment revenues and profitability
Net revenue	17,045	15,473
Costs of revenue	10,838	10,033
Gross profit	6,207	5,440
Gross margin	36.00%	35.00%
Operating expenses:
Direct selling and marketing	757	992
Direct research and development
Indirect	774	999
(Loss) income from operations	$ 4,676	$ 3,449