General (Details 4) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets
Restricted Cash	$ 135,366	$ 215,325
Investments	370,805	267,654
Cash held in bank accounts by the Company, unrestricted	51,800	116,000
Cash held in bank accounts by the Company, restricted	74,100	149,300
Liabilities
Contingent consideration	108,443	58,153
Level 2 \| Term Loan
Liabilities
Fair value of debt	237,500
Fair value measured on recurring basis
Assets
Total assets measured at fair value	477,116	472,926
Liabilities
Contingent consideration	108,443	58,153
Total liabilities held at fair value	108,443	58,153
Fair value measured on recurring basis \| Other than cash held in bank accounts by Company
Assets
Cash and Cash Equivalents	45,091	139,280
Restricted Cash	61,220	65,992
Fair value measured on recurring basis \| U.S. Government and agency securities
Assets
Investments	4,982	4,303
Fair value measured on recurring basis \| Obligations of government-sponsored enterprises
Assets
Investments	43,067	15,315
Fair value measured on recurring basis \| Corporate debt securities
Assets
Investments	321,606	246,886
Fair value measured on recurring basis \| Certificates of deposit
Assets
Investments	1,150	1,150
Fair value measured on recurring basis \| Level 1
Assets
Total assets measured at fair value	4,982	4,303
Fair value measured on recurring basis \| Level 1 \| U.S. Government and agency securities
Assets
Investments	4,982	4,303
Fair value measured on recurring basis \| Level 2
Assets
Total assets measured at fair value	472,134	468,623
Fair value measured on recurring basis \| Level 2 \| Other than cash held in bank accounts by Company
Assets
Cash and Cash Equivalents	45,091	139,280
Restricted Cash	61,220	65,992
Fair value measured on recurring basis \| Level 2 \| Obligations of government-sponsored enterprises
Assets
Investments	43,067	15,315
Fair value measured on recurring basis \| Level 2 \| Corporate debt securities
Assets
Investments	321,606	246,886
Fair value measured on recurring basis \| Level 2 \| Certificates of deposit
Assets
Investments	1,150	1,150
Fair value measured on recurring basis \| Level 3
Liabilities
Contingent consideration	108,443	58,153
Total liabilities held at fair value	$ 108,443	$ 58,153

Fair value of contingent consideration in a business combination as of the balance sheet date.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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