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Restructuring and Related Charges (Tables) | 12 Months Ended
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Dec. 31, 2017
Restructuring and Related Charges [Abstract] |
Schedule of restructuring liability by type of cost | The following details the changes in the Company’s restructuring liability for lease and related costs during the three years ended December 31, 2017 (in thousands):
|  | 2015 |  | 2016 |  | 2017 |
Balance at beginning of period(1) |  | $ | 27,283 |  | $ | 20,055 |  | $ | 11,985 |
Adjustments(2) |  |  | 526 |  |  | (1,632) |  |  | 419 |
Payments |  |  | (7,754) |  |  | (6,438) |  |  | (3,623) |
Balance at end of period(1) |  | $ | 20,055 |  | $ | 11,985 |  | $ | 8,781 |
| (1) |  | The current portion of restructuring liabilities was $4.2 million and $3.1 million as of December 31, 2016 and December 31, 2017, respectively, which are included in accounts payable and accrued expenses. The long-term portion is included in other long-term liabilities.
| (2) |  | Adjustments include accretion of interest on lease costs, partially offset by changes in the timing and expected income from sublease agreements.

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- Definition Tabular disclosure of an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. This element may also include a description of any reversal and other adjustment made during the period to the amount of an accrued liability for restructuring activities. This element may be used to encapsulate the roll forward presentations of an entity's restructuring reserve by type of cost and in total, and explanation of changes that occurred in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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