Litigation, Commitments and Contingencies - Future Lease Cost (Details) $ in Thousands	Dec. 31, 2017 USD ($)
Contingencies
Gross Lease Costs, 2018	$ 45,421
Gross Lease Costs, 2019	38,807
Gross Lease Costs, 2020	30,956
Gross Lease Costs, 2021	24,756
Gross Lease Costs, 2022	17,896
Gross Lease Costs, Thereafter	56,234
Gross Lease Costs, Total	214,070
Future Expected Sublease Payments, 2018	8,072
Future Expected Sublease Payments, 2019	7,969
Future Expected Sublease Payments, 2020	7,672
Future Expected Sublease Payments, 2021	7,307
Future Expected Sublease Payments, 2022	6,972
Future Expected Sublease Payments, Thereafter	41,568
Future Expected Sublease Payments, Total	$ 79,560

Amount of sublease rental income expected in the next fiscal year.

No definition available.

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- Definition

Amount of sublease rental income expected in the fifth fiscal year following the latest fiscal year.

+ References

No definition available.

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Amount of sublease rental income expected in the fourth fiscal year following the latest fiscal year.

+ References

No definition available.

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- Definition

Amount of sublease rental income expected in the third fiscal year following the latest fiscal year.

+ References

No definition available.

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- Definition

Amount of sublease rental income expected in the second fiscal year following the latest fiscal year.

+ References

No definition available.

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- Definition

Amount of sublease rental income expected after the fifth fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

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- Definition

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 55
-Paragraph 40
-Subparagraph (Note 3)
-URI http://asc.fasb.org/extlink&oid=82846649&loc=d3e38371-112697

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Contractually required future rental payments receivable on noncancelable subleasing arrangements.

+ References

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717

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-Publisher FASB
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-Section 55
-Paragraph 40
-Subparagraph (Note 3)
-URI http://asc.fasb.org/extlink&oid=82846649&loc=d3e38371-112697

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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