CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011
Non-cash activity:
Decrease in cash and cash equivalents from deconsolidation of partnership	$ 0	$ 1,251
Decrease in net assets from deconsolidation of partnership	0	2,852
Decrease in noncontrolling interests from deconsolidation of that partnership	0	4,103
Accrued restricted stock award dividends	$ 203	$ 27

Equity impact of stock dividends declared by an entity during the period and applicable to holders of share-based compensation, such as non-vested shares, stock options, or restricted stock units. This element includes paid and unpaid dividends declared during the period.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration