CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock and Additional Paid-in Capital	Accumulated Deficit	Noncontrolling Interests
Balance at Dec. 31, 2011	$ 15,493	$ 35,047	$ (18,713)	$ (841)
Balance (in shares) at Dec. 31, 2011	12,193	12,193
Increase (Decrease) in Stockholders' Equity
Deconsolidation of variable interest entities	660			660
Nonemployee warrants for services	276	276
Stock-based compensation expense	190	190
Public stock offering, net	3,641	3,641
Public stock offering, net (in shares)		1,100
Exercises of options and warrants	23	23
Exercises of options and warrants (in shares)		15
Net loss	(2,413)		(2,268)	(145)
Balance at Mar. 31, 2012	$ 17,870	$ 39,177	$ (20,981)	$ (326)
Balance (in shares) at Mar. 31, 2012	13,308	13,308