Consolidated Statements Of Operations (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Operating revenues:
Operating revenues	$ 30,105	$ 30,102
Operating expenses:
Cost of services and products (exclusive of depreciation and amortization expense)	11,791	13,465
Selling, general and administrative expenses	20,766	23,989
Depreciation and amortization	3,464	3,815
Loss on disposal, restructuring costs and other special charges	700	447
Total operating expenses	36,721	41,716
Operating loss	(6,616)	(11,614)
Other income (expense):
Interest expense, net	(162)	(756)
Income from investment	52,373	13,000
Other income, net	26	166
Total other income (expense), net	52,237	12,410
Income before income taxes	45,621	796
Income tax expense	16,187	1,442
Net income (loss)	29,434	(646)
Preferred dividends	25	25
Net income (loss) applicable to common stock	29,409	(671)
Basic earnings (loss) per common share	$ 4.89	$ (0.11)
Diluted earnings (loss) per common share	$ 4.89	$ (0.11)
Weighted average shares of common stock used to calculate earnings per common share
Basic	5,808	6,112
Diluted	5,808	6,112
Dividends declared per common share		$ 0.54
Unified Communications [Member]
Operating revenues:
Operating revenues	16,989	15,834
Operating expenses:
Cost of services and products (exclusive of depreciation and amortization expense)	7,784	8,798
Selling, general and administrative expenses	13,199	15,602
Depreciation and amortization	1,934	2,287
Loss on disposal, restructuring costs and other special charges	392	447
Total operating expenses	23,309	27,134
Operating loss	(6,320)	(11,300)
Telephone [Member]
Operating revenues:
Operating revenues	13,116	14,268
Operating expenses:
Cost of services and products (exclusive of depreciation and amortization expense)	4,007	4,667
Selling, general and administrative expenses	7,567	8,387
Depreciation and amortization	1,530	1,528
Loss on disposal, restructuring costs and other special charges	308
Total operating expenses	13,412	14,582
Operating loss	$ (296)	$ (314)