XML 22 R44.htm IDEA: XBRL DOCUMENT v2.4.0.6

Percentage of Accounts Receivable by Significant Customers (Detail) (Accounts Receivable)	Sep. 30, 2012	Dec. 31, 2011
Bristol Myers Squibb Company
Concentration Risk [Line Items]
Accounts receivable, percentage by customer	34.00%	53.00%
Bioprocessing Customer A
Concentration Risk [Line Items]
Accounts receivable, percentage by customer	44.00%	31.00%
Bioprocessing Customer B
Concentration Risk [Line Items]
Accounts receivable, percentage by customer	9.00%	7.00%

X

- Definition

Concentration of Risk Accounts Receivable Percentage

+ References

No definition available.

+ Details

Name:	rgen_ConcentrationOfRiskAccountsReceivablePercentage
Namespace Prefix:	rgen_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

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