CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) (USD $) In Thousands, unless otherwise specified	301 Months Ended
Sep. 30, 2012
Proceeds from sale of subsidiary, operating losses during 1990 phase-out period	$ 12,345

Operating Losses During Phase-out Period From Divestiture of Interest in Consolidated Subsidiaries

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration