6. Stock-Based Compensation (Details)	3 Months Ended
	Mar. 31, 2017 USD ($) $ / shares shares
Options
Number of Shares, Outstanding at beginning of period | shares	481,947
Options, Exercised | shares	0
Options, Forfeited and canceled | shares	(187,351)
Number of Shares, Outstanding at end of period | shares	294,596
Number of Shares, Exercisable at end of period | shares	244,868
Weighted Average Exercise Price, Options
Weighted average exercise price, Outstanding at beginning of period | $ / shares	$ 12.14
Weighted average exercise price options, Exercised | $ / shares	0.00
Weighted average exercise price options, Forfeited and canceled | $ / shares	11.93
Weighted average exercise price, Outstanding at end of period | $ / shares	12.28
Weighted average exercise price, Exercisable at end of period | $ / shares	$ 13.69
Weighted Average Remaining Contract Term, Options
Weighted Average Remaining Contract Term, Outstanding at beginning of period	7 years 7 months 6 days
Weighted Average Remaining Contract Term, Outstanding at end of period	7 years 2 months 8 days
Weighted Average Remaining Contract Term, Exercisable	6 years 11 months 1 day
Intrinsic Value, Options
Outstanding Aggregate Intrinsic Value, beginning of period | $	$ 0
Outstanding Aggregate Intrinsic Value, end of period | $	0
Exercisable Aggregate Intrinsic Value | $	$ 0