Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock	Paid-in Capital	Retained Earnings (Deficit)	Noncontrolling Interest
Balance at Dec. 31, 2011	$ 10,140	$ 31	$ 5,096	$ 5,013
Balance, shares at Dec. 31, 2011		30,816,631
Issuance of common stock for business acquisition	158		158
Issuance of common stock for business acquisition, shares		266,478
Issuance of common stock for option exercise	13		13
Issuance of common stock for option exercise, shares	34,500	34,500
Issuance of common stock for cashless warrant exercise, shares	5,625	5,625
Issuance of common stock for consulting services	20		20
Issuance of common stock for consulting services, shares	25,000	25,000
Employee stock-based compensation expense	166		166
Issuance of noncontrolling interest in ZBC (Note2)	10				10
Net income (loss)	1,548			1,553	(5)
Balance at Dec. 31, 2012	12,055	31	5,453	6,566	5
Balance, shares at Dec. 31, 2012	31,148,234	31,148,234
Issuance of common stock for option exercise, shares	23,000	23,000
Employee stock-based compensation expense	133		133
Net income (loss)	(7,340)			(7,301)	(39)
Balance at Dec. 31, 2013	$ 4,848	$ 31	$ 5,586	$ (735)	$ (34)
Balance, shares at Dec. 31, 2013	31,171,234	31,171,234