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Summary of Significant Accounting Policies and Practices Fair value measurements (Policies)	12 Months Ended
	Dec. 31, 2012
Summary of Significant Accounting Policies and Practices [Abstract]
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair value measurements The Company applies the provisions of ASC Topic 820, Fair Value Measurements and Disclosures ("ASC Topic 820"), regarding fair value measurements for assets and liabilities. ASC Topic 820 defines fair value, establishes a framework for measuring fair value and requires certain disclosures about fair value measurements. The provisions apply whenever other accounting pronouncements require or permit fair value measurements. See Note 17, Financial Instruments and Fair Value Measurements, for the required fair value disclosures.