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Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2015
Fair Value Measurements [Abstract] |
Summary Of Assets And Liabilities Measured At Fair Value On Recurring Basis |
| Fair Value Measurements as of March 31, 2015
(in thousands) |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total
Description |  |  |  |  |  |  |  |  |  |  |
Cash equivalents (a) | $ | 87,920 |  | $ | — |  | $ | — |  | $ | 87,920
Redeemable noncontrolling interests (b) | $ | — |  | $ | — |  | $ | 8,872 |  | $ | 8,872
| (a) |  | Cash equivalents include funds held in money market instruments and are reported at their current carrying value, which approximates fair value due to the short-term nature of these instruments and are included in cash and cash equivalents in the consolidated balance sheet.
| (b) |  | Redeemable noncontrolling interests represents a put option that owners of interests in a certain subsidiary have the right, in certain circumstances, to require the Company to acquire either a portion of, or all of, the remaining ownership interests held by them. The Company determines the fair value of the redeemable noncontrolling interests based on unobservable inputs considering the assumptions that market participants would make in pricing the obligation. Given the significance of the unobservable inputs, the valuations are classified in level 3 of the fair value hierarchy. See Note 15.

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258 + Details
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