7. Share-based Compensation (Details) (Employee Stock Option [Member], USD $)	9 Months Ended
	Sep. 30, 2014
Employee Stock Option [Member]
Number of Shares
Outstanding at beginning of year, Shares	1,417,309
Granted, Shares	85,000
Exercised, Shares	(65,842)
Forfeited, Shares	(49,002)
Expired, Shares	$ (3,124)
Outstanding at September 30, 2014	1,384,341
Stock options exercisable at September 30, 2014, Shares	1,209,061
Wtd. Avg Exercise Price
Outstanding at beginning of year, Wtd. Avg. Shares Exercise Price	$ 1.36
Granted, Wtd. Avg. Shares Exercise Price	$ 3.49
Exercised, Wtd. Avg. Shares Exercise Price	$ 1.22
Forfeited, Wtd. Avg. Shares Exercise Price	$ 1.52
Expired, Wtd. Avg. Shares Exercise Price	$ 2.23
Outstanding at September 30, 2014, Wtd. Avg. Shares Exercise Price	$ 1.49
Stock options exercisable at September 30, 2014, Wtd. Avg. Shares Exercise Price	$ 1.28