Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Schedule Of Segment Information) (Details)

v3.7.0.1
Segment Information (Schedule Of Segment Information) (Details) - USD ($)
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Segment Reporting Information [Line Items]      
Sales $ 20,800,079 $ 24,666,444  
Cost of sales 14,835,014 17,897,426  
Gross profit 5,965,065 6,769,018  
Selling, general and administrative expenses 7,037,255 9,637,061  
Pension liability adjustment gains   (4,147,836)  
Restructuring expense 387,638    
Operating (loss) income (1,459,828) 1,279,793  
Depreciation and amortization 873,357 890,411  
Capital expenditures 38,000 807,000  
Assets 70,509,866 84,714,000 $ 73,177,016
Intersegment Eliminations [Member]      
Segment Reporting Information [Line Items]      
Sales (197,000) (334,000)  
Cost of sales (1,000) (93,000)  
Gross profit (196,000) (241,000)  
Selling, general and administrative expenses (196,000) (225,000)  
Operating (loss) income (16,000)  
Depreciation and amortization    
Capital expenditures (16,000)  
Assets (27,000) (22,000)  
Suttle [Member]      
Segment Reporting Information [Line Items]      
Sales 8,772,000 11,789,000  
Cost of sales 7,714,000 9,744,000  
Gross profit 1,058,000 2,045,000  
Selling, general and administrative expenses 2,210,000 3,487,000  
Restructuring expense 388,000    
Operating (loss) income (1,540,000) (1,442,000)  
Depreciation and amortization 591,000 576,000  
Capital expenditures 23,000 479,000  
Assets 32,824,000 38,941,000  
Transition Networks [Member]      
Segment Reporting Information [Line Items]      
Sales 9,004,000 8,330,000  
Cost of sales 5,119,000 5,147,000  
Gross profit 3,885,000 3,183,000  
Selling, general and administrative expenses 3,739,000 4,638,000  
Pension liability adjustment gains    
Operating (loss) income 146,000 (1,455,000)  
Depreciation and amortization 187,000 221,000  
Capital expenditures 85,000  
Assets 15,426,000 19,617,000  
JDL Technologies [Member]      
Segment Reporting Information [Line Items]      
Sales 2,864,000 4,312,000  
Cost of sales 1,903,000 2,858,000  
Gross profit 961,000 1,454,000  
Selling, general and administrative expenses 576,000 1,006,000  
Restructuring expense    
Operating (loss) income 385,000 448,000  
Depreciation and amortization 77,000 61,000  
Capital expenditures 2,000 75,000  
Assets 5,427,000 5,649,000  
Net2Edge [Member]      
Segment Reporting Information [Line Items]      
Sales 357,000 569,000  
Cost of sales 100,000 241,000  
Gross profit 257,000 328,000  
Selling, general and administrative expenses 708,000 731,000  
Operating (loss) income (451,000) (403,000)  
Depreciation and amortization 18,000 33,000  
Capital expenditures 9,000  
Assets 1,468,000 2,295,000  
Other [Member]      
Segment Reporting Information [Line Items]      
Sales  
Cost of sales  
Gross profit    
Selling, general and administrative expenses    
Pension liability adjustment gains   (4,148,000)  
Restructuring expense    
Operating (loss) income 4,148,000  
Depreciation and amortization  
Capital expenditures 4,000 184,000  
Assets $ 15,392,000 $ 18,234,000