Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2016

Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract]

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

A summary of all current and expired plans as of September 30, 2016 and changes during the period then ended are presented in the following table:

Options

					Weighted Average
					Remaining		Aggregate
	Number of		Weighted Average		Contractual Life		Intrinsic Value
	Options		Exercise Price		(in years)		(in thousands)
Outstanding as of December 31, 2015		767,476	$	7.90		4.28	$	34
Granted		484,781		1.94		—		—
Exercised		—		—		—		—
Forfeited or expired		(485,406)		7.57		—		—
Outstanding as of September 30, 2016		766,851		4.34		6.99		32
Exercisable as of September 30, 2016		282,070	$	8.45		2.53	$	32

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

Restricted Stock

					Weighted Average
			Weighted Average		Remaining
			Fair Value at		Contractual Life
	Number of shares		Grant Date		(in years)
Unvested balance as of December 31, 2015		3,750	$	4.84		0.41
Granted		—		—		—
Vested		3,750		4.84		—
Unvested balance as of September 30, 2016		—	$	—		—

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The following table summarizes the range of assumptions utilized in the Black-Scholes-Merton option-pricing model for the valuation of stock options granted during the nine-month periods ended September 30, 2016 and 2015.

	Nine-Month Period Ended September 30,
	2016						2015
Range of values:	Low			High			Low			High
Expected volatility		81.78	%		91.82	%		71.85	%		80.91	%
Expected dividends		—			—			—			—
Expected term (in years)		3.73			9.74			4.78			8.11
Risk free rate		0.95	%		1.69	%		1.13	%		2.02	%