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Leases Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Leases [Abstract]
Amortization of right-of-use assets	$ 34	$ 64
Interest on lease liabilities	11	22
Operating lease cost	4,257	7,364
Short-term lease cost	120	134
Total lease cost	$ 4,422	$ 7,584

X

- Definition

Amount of interest expense on finance lease liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980

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+ Details

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Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of amortization expense attributable to right-of-use asset from finance lease.

+ References

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-Publisher FASB
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-Section 50
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X

- Definition

Amount of lease cost recognized by lessee for lease contract.

+ References

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X

- References

No definition available.

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X

- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

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-Publisher FASB
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X

- Definition

Amount of short-term lease cost, excluding expense for lease with term of one month or less.

+ References

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