Consolidated Balance Sheets (Parenthetical) (Unaudited) (BRL)	Jun. 30, 2011	Dec. 31, 2010
SHAREHOLDERS' EQUITY:
Preferred stock, par value	0.01	0.01
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued	0	0
Common stock, par value	0.0001	0.0001
Common stock, shares authorized	12,500,000	12,500,000
Common stock, shares issued	8,472,927	8,472,927
Common stock, shares outstanding	8,129,437	8,137,762
Treasury stock, shares	343,490	335,165