Presentation Of Interim Financial Statements (BFC Dividends) (Details) - $ / shares	6 Months Ended
Jun. 30, 2016	Jun. 06, 2016
Dividends Payable, Date Declared	Jun. 06, 2016
Dividends Payable, Date to be Paid	Jul. 20, 2016
Dividends Payable, Date of Record	Jun. 20, 2016
Class A Common Stock [Member]
Dividends Payable, Amount Per Share		$ 0.005
Class B Common Stock [Member]
Dividends Payable, Amount Per Share		$ 0.005

Date the declared dividend will be paid, in CCYY-MM-DD format.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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Date the dividend to be paid was declared, in CCYY-MM-DD format.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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