Segment Information (Segment Balance Sheet And Capital Expenditures Information) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013
Segment Reporting Information [Line Items]
Assets	$ 37,263	$ 42,122		$ 38,942	$ 40,323	$ 41,880
Total capital expenditures	1,015	4,731	2,881
Unified Communications [Member]
Segment Reporting Information [Line Items]
Assets	21,884	23,500
Total capital expenditures	564	2,989	1,016
Telephone [Member]
Segment Reporting Information [Line Items]
Assets	15,379	18,622
Total capital expenditures	$ 451	$ 1,742	$ 1,865