Recent Accounting Literature and Changes in Accounting Principles (Details)	3 Months Ended
	Mar. 31, 2012
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. The Company adopted ASU 2011-04 in the first quarter of 2012 with no 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. In December 2011, the FASB issued ASU No. 2011-12 that defers the effective date for amendments to the presentation of reclassifications of items out of accumulated other comprehensive income in ASU 2011-05. The Company adopted ASU 2011-05 in the first quarter of 2012 with no impact on our financial position, results of operations or cash flows.