Recent Accounting Literature (Details)	6 Months Ended
	Jun. 30, 2011
Accounting Standards Update 2011-04 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
FASB issued Accounting Standards Update	ASU 2011-04
Description of change	Changes the wording used to describe many of the requirements in U.S. GAAP for measuring fair value and for disclosing information about fair value measurements to ensure consistency between U.S. GAAP and IFRS. ASU 2011-04 also expands the disclosures for fair value measurements that are estimated using significant unobservable Level 3 inputs. This new guidance is to be applied prospectively, and is effective for interim and annual periods beginning after December 15, 2011. We do not expect the adoption of ASU 2011-04 to have a material impact on our financial position, results of operations or cash flows.
Accounting Standards Update 2011-05 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
FASB issued Accounting Standards Update	ASU 2011-05
Description of change	Eliminates the option to report other comprehensive income and its components in the statement of changes in equity. ASU 2011-05 requires that all non-owner changes in stockholders' equity be presented in either a single continuous statement of comprehensive income or in two separate but consecutive statements. This new guidance is to be applied retrospectively, and is effective for interim and annual periods beginning after December 15, 2011. We do not expect the adoption of ASU 2011-05 to have a material impact on our financial position, results of operations or cash flows.