9. Share-based Compensation - Option activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Number of Shares
Outstanding at end of year, Shares	2,555,263
Wtd. Avg Exercise Price
Outstanding at end of year	$ 1.80
Common stock options
Number of Shares
Outstanding at beginning of year, Shares	1,390,770	1,417,309
Granted, Shares	1,300,881	95,000
Exercised, Shares	(131,388)	(68,520)
Forfeited, Shares	(3,438)	(49,895)
Expired - Vested, Shares	$ (1,562)	$ (3,124)
Outstanding at end of year, Shares	2,555,263	1,390,770
Stock options exercisable at end of year, Shares	1,185,582	1,225,358
Wtd. Avg Exercise Price
Outstanding at beginning of year	$ 1.50	$ 1.36
Granted, Wtd. Avg. Shares Exercise Price	2.06	3.36
Exercised, Wtd. Avg. Shares Exercise Price	1.23	1.22
Forfeited, Wtd. Avg. Shares Exercise Price	3.77	1.51
Expired - Vested, Wtd. Avg. Shares Exercise Price	3.77	2.23
Outstanding at end of year	1.80	1.50
Stock options exercisable at end of year, Wtd. Avg. Shares Exercise Price	$ 1.42	$ 1.33