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7. ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Payables and Accruals [Abstract] |  |
Accounts payable | $ 46,855us-gaap_AccountsPayableCurrent | $ 36,962us-gaap_AccountsPayableCurrent
Accrued expenses | 35,776us-gaap_AccruedLiabilitiesCurrent | 43,175us-gaap_AccruedLiabilitiesCurrent
Accrued payroll and vacation | 4,970us-gaap_EmployeeRelatedLiabilitiesCurrent | 17,902us-gaap_EmployeeRelatedLiabilitiesCurrent
Accrued professional fees | 10,215us-gaap_AccruedProfessionalFeesCurrent | 8,277us-gaap_AccruedProfessionalFeesCurrent
Accounts payable and accrued expenses | $ 97,816us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent | $ 106,316us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent

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- Definition Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 + Details
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