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Redeemable Non-Controlling Interest (Temporary Equity) And Mandatorily Redeemable Equity Interests (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Redeemable Noncontrolling Interest [Line Items]
Payments for Repurchase of Redeemable Noncontrolling Interest	$ 317	$ 24
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount	0		86
Distributions Mandatorily Redeemable Equity Interests	86	789
Reclassification to Mandatorily Redeemable Equity Interests	6,071
Mandatorily redeemable equity interests	0		86
PrinceRidge [Member]
Redeemable Noncontrolling Interest [Line Items]
Payments for Repurchase of Redeemable Noncontrolling Interest		43
Proceeds from Noncontrolling Interests		$ 20

X

- Definition

Distributions to the mandatorily redeemable equity interests.

+ References

No definition available.

+ Details

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X

- Definition

Reclassification to Mandatorily Redeemable Equity Interests.

+ References

No definition available.

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X

- Definition

The cash outflow during the period for redemption of redeemable noncontrolling interests.

+ References

No definition available.

+ Details

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X

- Definition

Amount of cash inflow from a noncontrolling interest. Includes, but is not limited to, purchase of additional shares or other increase in noncontrolling interest ownership.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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X

- Definition

The amount that would be paid, determined under the conditions specified in the contract, if as of the reporting date, the holder of the share has the right to redeem the shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 480

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6940734&loc=d3e22047-110879

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