4. Share-based Compensation (Details) (USD $)	3 Months Ended
	Mar. 31, 2014
Number of Shares
Outstanding at beginning of year, Shares	1,417,309
Granted, Shares
Exercised, Shares
Forfeited, Shares	(46,844)
Outstanding at March 31, 2014, Shares	1,370,465
Stock options exercisable at March 31, 2014 Shares	1,248,342
Wtd. Avg Exercise Price
Outstanding at beginning of year, Wtd. Avg. Shares Exercise Price	$ 1.36
Forfeited, Wtd. Avg. Shares Exercise Price	$ 1.39
Outstanding at March 31, 2014, Wtd. Avg. Shares Exercise Price	$ 1.36
Stock options exercisable at March 31, 2014, Wtd. Avg. Shares Exercise Price	$ 1.20