Quarterly Operating Results (Unaudited)	12 Months Ended
Dec. 31, 2012
Quarterly Operating Results (Unaudited) [Abstract]
Quarterly Operating Results (Unaudited)	Quarterly Operating Results (Unaudited)

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

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