Stock-Based Compensation (Narrative) (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Intrinsic value of options exercisable		$ 0
Weighted average exercise price of options outstanding		$ 8.76
Common stock closing price		1.52
Weighted average exercise price, options exercisable		$ 8.76
Options granted in stock option grant	547,181	231,208	547,181
Exercise price of options granted	$ 8.72	$ 2.82	$ 8.72
Unrecognized compensation cost related to unvested options		$ 1,900,000
Weighted-average remaining period for recognition of compensation costs related to unvested options		2 years 8 months 27 days
Employees and an Executive [Member]
Options granted in stock option grant		231,208
Exercise price of options granted		$ 2.82
Chief Executive Officer [Member]
Options granted in stock option grant	399,716		399,716
Exercise price of options granted	$ 9.45		$ 9.45
Chief Financial Officer [Member]
Options granted in stock option grant		99,919
Exercise price of options granted		$ 2.85
Employee Stock Purchase Plan 2016 [Member]
ESPP plan description		The shares are sold to participants at a price equal to the lesser of 85% of the fair market value of the Company's common stock at the (i) beginning of the six month offering period, or (ii) end of the six month purchase period
Percent of fair market value at which employees can purchase common stock		85.00%
Shares provided for under ESPP		120,000
Shares issued under ESPP		0
Equity Incentive Plan 2016 [Member]
Shares allocated to plan upon approval		1,000,000
Vesting period of share-based compensation award		4 years
Expiration period of share-based payment award		10 years