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Commitments and Contingencies (Future Minimum Sublease Rental Income) (Details)	Dec. 31, 2018 USD ($)
Sublease Rentals [Line Items]
2019	$ 8,022
2020	4,003
2021	1,585
2022	1,264
2023	1,126
Thereafter	1,042
Rental income	$ 17,042

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- Definition

[Line Items] for Sublease Rentals [Table]

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- Definition

Future minimum rental payments in aggregate as of the balance sheet date under operating leases.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 4
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- Definition

Future rental payments receivable within one year of the balance sheet date under an operating lease.

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Future rental payments receivable within the fifth year from the balance sheet date under an operating lease.

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Future rental payments receivable within the fourth year from the balance sheet date under an operating lease.

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Future rental payments receivable within the third year from the balance sheet date under an operating lease.

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Future rental payments receivable within the second year from the balance sheet date under an operating lease.

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Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date.

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