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7. Stockholders' Equity (Details)	12 Months Ended
	Dec. 31, 2012
Common Class A [Member]
Class of Stock [Line Items]
Voting Rights, Number of Vote Entitled Per Share	0.1
Election Percentage for Board of Directors	25.00%
Common Class B [Member]
Class of Stock [Line Items]
Voting Rights, Number of Vote Entitled Per Share	1
Election Percentage for Board of Directors	75.00%

X

- Definition

Election Percentage for Board of Directors

+ References

No definition available.

+ Details

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X

- Definition

Voting Rights, Number of Vote Entitled Per Share

+ References

No definition available.

+ Details

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Namespace Prefix:	bio_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration