5. Stock-Based Compensation (Details)	3 Months Ended
	Mar. 31, 2016 USD ($) $ / shares shares
Options
Number of Shares, Outstanding at beginning of period | shares	417,404
Options, Granted | shares	0
Options, Exercised | shares	0
Options, Forfeited and canceled | shares	(22,063)
Number of Shares, Outstanding at end of period | shares	395,341
Number of Shares, Exercisable at end of period | shares	261,469
Weighted Average Exercise Price, Options
Weighted average exercise price, Outstanding at beginning of period | $ / shares	$ 18.04
Weighted average exercise price options, Granted | $ / shares	0.00
Weighted average exercise price options, Exercised | $ / shares	0.00
Weighted average exercise price options, Forfeited and canceled | $ / shares	7.79
Weighted average exercise price, Outstanding at end of period | $ / shares	18.61
Weighted average exercise price, Exercisable at end of period | $ / shares	$ 21.81
Weighted Average Remaining Contract Term, Options
Weighted Average Remaining Contract Term, Outstanding at end of period	7 years 4 months 24 days
Weighted Average Remaining Contract Term, Exercisable	6 years 10 months 24 days
Intrinsic Value, Options
Outstanding Aggregate Intrinsic Value, end of period | $	$ 0
Exercisable Aggregate Intrinsic Value | $	$ 0