Stock Incentive Plan Compensation (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Estimated forfeiture rate, stock options granted	8.00%
Closing stock price	$ 0.44
Weighted average exercise price of unvested options	4.68
Weighted average exercise price of options exercisable	8.88
Weighted average exercise price options outstanding	$ 6.45	$ 8.68
Unvested options outstanding	432,831
Unvested options weighted average grant date fair value	$ 4.12
Options granted in stock option grant	264,208	596,569
Exercise price of options granted	$ 2.65
Unrecognized compensation cost related to unvested options	$ 1,400,000
Weighted-average remaining period for recognition of compensation costs related to unvested options	2 years 7 months 2 days
Equity Incentive Plan 2016 [Member]
Expiration period of share-based payment award	10 years
Vesting period of share-based compensation award	4 years
Additional shares added to the Plan during period	1,000,000
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 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 during the period	32,726
ESPP compensation expenses	$ 12,000
Employees and an Executive [Member]
Options granted in stock option grant	264,208
Exercise price of options granted	$ 2.65
Chief Financial Officer [Member]
Options granted in stock option grant	99,919
Exercise price of options granted	$ 2.85