Stockholders' Equity (Narrative) (Details) - USD ($)		12 Months Ended
	Sep. 14, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2003	Dec. 31, 2015
Class Of Stock [Line Items]
Common stock, shares authorized		300,000,000	300,000,000
Common stock, par value		$ 0.01	$ 0.01
Preferred stock, shares authorized		10,000,000	10,000,000
Preferred stock, par value		$ 10.00	$ 10.00
Options, Exercised (in shares)		10,000	40,000
Convertible Preferred Stock, Shares Issuable upon Conversion		The Company's Class N preferred shares, each of which is convertible to 40 common shares, have the right to receive dividends or dividend equivalents should the Company declare dividends on its common stock.
Class N preferred shares, each convertible to common shares		40
Class N preferred shares, conversion price per share		$ 1,000
Term of Stock-Based Compensation Plan		6 years 9 months 18 days	6 years 9 months
Exercise Price, Outstanding		$ 0.97	$ 0.96					$ 1.70
Options to purchase, Granted (in shares)		50,000	3,259,200
Exercise price, options granted in period		$ 0.48	$ 0.45
Stock-based compensation expense		$ 246,000	$ 99,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares		2,368,113	3,321,700
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value		$ 0.31	$ 0.32
Employee Service-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options		$ 700,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition		2 years 10 months 24 days
Fair Value of Options Vested in Period		$ 300,000	$ 400,000
Aggregate intrinsic value of exercisable options		$ 1,000	$ 4,000
Number of restricted stock awards granted		300,000
Other Options Issued [Member]
Class Of Stock [Line Items]
Stock Option Award Vesting Period				4 years
Options to purchase, Granted (in shares)		0	0	625,000
Exercise price, options granted in period				$ 2.00
Stock Options [Member] | Selling, General and Administrative Expenses [Member]
Class Of Stock [Line Items]
Stock-based compensation expense		$ 200,000	$ 100,000
Restricted Stock [Member]
Class Of Stock [Line Items]
Stock-based compensation expense		$ 4,000	$ 18,000
Number of restricted shares awarded to each employee		150,000
2003 Stock Option and Appreciation Rights Plan [Member]
Class Of Stock [Line Items]
Options, Exercised (in shares)		10,000	40,000
Number of Shares Authorized for Stock-Based Compensation Plan							2,000,000
Term of Stock-Based Compensation Plan							10 years
Stock Option Award Vesting Period							4 years
Options to purchase, Granted (in shares)		0
2003 Stock Option and Appreciation Rights Plan [Member] | Minimum [Member]
Class Of Stock [Line Items]
Exercise Price, Outstanding							$ 0.08
2003 Stock Option and Appreciation Rights Plan [Member] | Maximum [Member]
Class Of Stock [Line Items]
Exercise Price, Outstanding							$ 2.00
2010 Non-Qualified Stock Option Plan [Member]
Class Of Stock [Line Items]
Number of Shares Authorized for Stock-Based Compensation Plan						1,250,000
Stock Option Award Vesting Period						4 years
Options to purchase, Granted (in shares)		50,000	720,000
2010 Non-Qualified Stock Option Plan [Member] | Directors [Member] | Annual Compensation [Member]
Class Of Stock [Line Items]
Options to purchase, Granted (in shares)		50,000	70,000
2010 Non-Qualified Stock Option Plan [Member] | Directors [Member] | Special Grant to Directors [Member]
Class Of Stock [Line Items]
Options to purchase, Granted (in shares)			125,000
2010 Non-Qualified Stock Option Plan [Member] | Officer [Member] | Special Grant to Employee Base [Member]
Class Of Stock [Line Items]
Options to purchase, Granted (in shares)			525,000
2010 Non-Qualified Stock Option Plan [Member] | Minimum [Member]
Class Of Stock [Line Items]
Exercise Price, Outstanding						$ 0.24
2010 Non-Qualified Stock Option Plan [Member] | Maximum [Member]
Class Of Stock [Line Items]
Exercise Price, Outstanding						$ 0.70
Equity Partners Stock Option Plan [Member]
Class Of Stock [Line Items]
Number of Shares Authorized for Stock-Based Compensation Plan					230,000
Options to purchase, Granted (in shares)		0	0		230,000
Exercise price, options granted in period					$ 1.83
2016 Stock Option Plan [Member]
Class Of Stock [Line Items]
Number of Shares Authorized for Stock-Based Compensation Plan	3,150,000
Stock Option Award Vesting Period	4 years
Exercise Price, Outstanding	$ 0.45
Options to purchase, Granted (in shares)		0	2,539,200
Common Stock [Member]
Class Of Stock [Line Items]
Options, Exercised (in shares)		10,000	40,000
Share price		$ 25.00
Class N preferred stockholders to liquidation preference, conversion price per share		$ 1,000
Preferred Stock [Member]
Class Of Stock [Line Items]
Convertible Preferred Stock, Shares Issuable upon Conversion		Each Class N preferred share has a voting entitlement equal to 40 common shares, votes with the common stock on an as-converted basis and is senior to all other preferred stock of the Company. Dividends, if any, will be paid on an as-converted basis equal to common stock dividends. The conversion value of each Class N preferred share is $1,000, and each share is convertible to 40 common shares at the rate of $25.00 per common share. The Class N preferred stockholders are entitled to liquidation preference over common stockholders equivalent to $1,000 per share.
Conversion of class N preferred stock to shares of common stock		0	0