Summary of Significant Accounting Policies (Details Textual) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Summary of Significant Accounting Policies [Line Items]
Amortization of Intangible Assets	$ 171	$ 178
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	171
Finite-Lived Intangible Assets, Amortization Expense, Year Two	171
Finite-Lived Intangible Assets, Amortization Expense, Year Three	171
Finite-Lived Intangible Assets, Amortization Expense, Year Four	171
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$ 171
Multiemployer Plans, Collective-Bargaining Arrangement, Percentage of Employer's Participants	29.00%
Royalty Expense	$ 150	$ 107
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	6 years 6 months	6 years 6 months
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate	51.00%	51.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	0.74%	0.25%
Incremental Common Shares Attributable to Call Options and Warrants	1,670	1,878
Amortization	$ 532	$ 818
Stock Issued During Period, Shares, Treasury Stock Reissued	1,358	502
Employee Stock Ownership Plan (ESOP), Compensation Expense	$ 216	$ 221
Customer Relationships [Member]
Summary of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Assets, Amortization Method	10 years
Proprietary Technology [Member]
Summary of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Assets, Amortization Method	10 years
Noncompete Agreements [Member]
Summary of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Assets, Amortization Method	3 years
Analog Video Headend Products [Member]
Summary of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage	10.00%	17.00%
Digital Video Headend Products [Member]
Summary of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage	52.00%	46.00%
Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Assets, Amortization Method	1 years
Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Assets, Amortization Method	2 years
Office Equipment [Member] | Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	3 years
Office Equipment [Member] | Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	5 years
Furniture and Fixtures [Member] | Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	5 years
Furniture and Fixtures [Member] | Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	7 years
Machinery and Equipment [Member] | Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	6 years
Machinery and Equipment [Member] | Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	10 years
Building Improvements [Member] | Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	10 years
Building Improvements [Member] | Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	15 years
Manufacturing Facility [Member]
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	40 years
License [Member]
Summary of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 117
Amortization	$ 361	$ 640