Consolidated Statements of Stockholders' Equity (Parentheticals)	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010
Statement Of Stockholders Equity [Abstract]
Common Stock Dividends, Shares (in dollars per shares)	840	840

Number of shares of common stock issued as dividends during the period. Excludes stock splits.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Name:	us-gaap_CommonStockDividendsShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration