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Redeemable Non-Controlling Interest (Temporary Equity) And Mandatorily Redeemable Equity Interests (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Redeemable Noncontrolling Interest [Line Items]
Redemption of redeemable non-controlling interest, net		$ 789	$ 6,152
Distributions Mandatorily Redeemable Equity Interests	2,640	86	3,723
Reclassification to Mandatorily Redeemable Equity Interests			6,446	3,536
Mandatorily redeemable equity interests	86	0	86
Redeemable equity interests	829	0	829
Promissory notes issued to employees			4,824
Minimum [Member]
Redeemable Noncontrolling Interest [Line Items]
Mandatorily Redeemable Equity Interests, Duration		2 years
Maximum [Member]
Redeemable Noncontrolling Interest [Line Items]
Mandatorily Redeemable Equity Interests, Duration		5 years
PrinceRidge [Member]
Redeemable Noncontrolling Interest [Line Items]
Redemption of redeemable non-controlling interest, net			6,172
PrinceRidge [Member] | Employees [Member]
Redeemable Noncontrolling Interest [Line Items]
Proceeds from Noncontrolling Interests			$ 20

X

- Definition

Distributions to the mandatorily redeemable equity interests.

+ References

No definition available.

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- Definition

Mandatorily Redeemable Equity Interests, Duration

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- Definition

Reclassification to Mandatorily Redeemable Equity Interests.

+ References

No definition available.

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- Definition

The fair value of notes issued in noncash investing and financing activities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 4

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-Publisher FASB

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-Topic 230

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-Section 50

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- Definition

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

+ References

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- 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



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-Name Accounting Standards Codification

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

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As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 480

-SubTopic 10

-Section S99

-Paragraph 3A

-Subparagraph (16)(c)

-URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 480

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- 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

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-Topic 480

-SubTopic 10

-Section 50

-Paragraph 2

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