Segment Information (Segment Income Statement Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Operating Revenues	$ 7,604	$ 7,447	$ 15,128	$ 15,187
Cost of services and products	2,867	3,215	5,919	7,004
Selling, general and administration expense	5,262	6,226	11,060	13,474
Depreciation and amortization	919	961	1,822	1,963
Total operating expenses	9,048	10,402	18,801	22,441
Operating income (loss)	(1,444)	(2,955)	(3,673)	(7,254)
Interest income (expense), net	(54)	(178)	(193)	(414)
Income from investment	50,333	3,250	52,373	6,500
Other (expenses) income, net	6	29	27	137
Income (loss) before income taxes	48,841	146	48,534	(1,031)
Unified Communications [Member]
Segment Reporting Information [Line Items]
Operating Revenues	4,234	3,920	8,445	7,876
Cost of services and products	1,889	2,015	3,915	4,585
Selling, general and administration expense	3,351	3,811	7,068	8,500
Depreciation and amortization	539	564	1,060	1,182
Total operating expenses	5,779	6,390	12,043	14,267
Operating income (loss)	(1,545)	(2,470)	(3,598)	(6,391)
Telephone [Member]
Segment Reporting Information [Line Items]
Operating Revenues	3,370	3,527	6,683	7,311
Cost of services and products	978	1,200	2,004	2,419
Selling, general and administration expense	1,911	2,415	3,992	4,974
Depreciation and amortization	380	397	762	781
Total operating expenses	3,269	4,012	6,758	8,174
Operating income (loss)	$ 101	$ (485)	$ (75)	$ (863)