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Related Party Transactions (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Related Party Transactions [Line Items] |  |  |  |
Net revenues from related parties | $ 6,493 | $ 7,525 | $ 13,212 | $ 15,214
Related Party Transaction, Expenses from Transactions with Related Party | $ 1,269 | $ 890 | $ 2,218 | $ 1,549
Majority Shareholder [Member] |  |  |  |
Related Party Transactions [Line Items] |  |  |  |
Aggregate voting power held by related party | 66.00% |  | 66.00% |
Majority Shareholder [Member] | Common Class B [Member] |  |  |  |
Related Party Transactions [Line Items] |  |  |  |
Percentage of common stock owned by related party | 100.00% |  | 100.00% |
Maximum [Member] | Majority Shareholder [Member] | Common Class A [Member] |  |  |  |
Related Party Transactions [Line Items] |  |  |  |
Percentage of common stock owned by related party | 2.00% |  | 2.00% |

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- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
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- Definition Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Related Parties -URI http://asc.fasb.org/extlink&oid=16382449 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07.1(c)) -URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999 + Details
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