15. STOCK OPTION PLAN - Summary of the Status of the Company's Stock Option Plan (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Options Outstanding, Shares, Beginning	198,183	284,729	371,866
Options Outstanding, Weighted Average Exercise Price, Beginning	$ 11.54	$ 11.02	$ 10.43
Options Exercised, Shares
Options Exercised, Weighted Average Exercise Price
Options Forfeited, Shares	(32,175)	(20,930)	(39,682)
Options Forfeited, Weighted Average Exercise Price	$ 11.54	$ 11.04	$ 10.30
Options Expired, Shares	(166,008)	(65,616)	(47,455)
Options Expired, Weighted Average Exercise Price	$ 11.54	$ 9.44	$ 6.99
Options Outstanding, Shares, Ending		198,183	284,729
Options Outstanding, Weighted Average Exercise Price, Ending	$ 0.00	$ 11.54	$ 11.02