XML 75 R44.htm IDEA: XBRL DOCUMENT v2.3.0.15

Contingent Value Obligations (Details)	Sep. 30, 2011
Contingent Value Obligations [Line Items]
CVO purchase price	0.75

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ Details

Name:	pgn_ContingentValueObligationsLineItems
Namespace Prefix:	pgn
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The negotiated purchase price of each contingent value obligation resulting from a lawsuit settlement.

+ Details

Name:	pgn_CvoPurchasePrice
Namespace Prefix:	pgn
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant