XML 39 R40.htm IDEA: XBRL DOCUMENT v2.4.0.6
Other Current Assets (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Other Current Assets [Abstract]    
Prepaid expenses $ 17,077 $ 24,669
Interest and other receivables 6,582 16,297
Other current assets 9,950 8,192
Other Assets, Current $ 33,609 $ 49,158