Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Operations (Parenthetical)

v2.4.0.6
Consolidated Statements of Operations (Parenthetical) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Consolidated Statements of Operations [Abstract]      
Interest income $ 100 $ 32 $ 22