Acquisition Of Noncontrolling Interest (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Mar. 31, 2011	Jun. 30, 2011	Jan. 02, 2011	Dec. 31, 2010
Acquisition Of Noncontrolling Interest [Abstract]
Owned profits interests			100.00%	65.00%
Reacquired membership interest				35.00%
Acquisition of Noncontrolling Interest	$ 1,973	$ 1,933

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

No definition available.

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant