v3.19.3

Adoption of ASU No. 2016-02, Leases (Narrative) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets, net	$ 7,402
Weighted-average remaining lease term (in years)	8 years 3 months 18 days
Weighted-average discount rate	14.50%
Lease payment under ASC 840, due 2019			$ 2,800
Lease payment under ASC 840, due 2020			2,900
Lease payment under ASC 840, due 2021			2,900
Lease payment under ASC 840, due 2022			3,100
Lease payment under ASC 840, due 2023			3,000
Lease payment under ASC 840, due thereafter			$ 12,200
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets, net		$ 15,400

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of lessee's right to use underlying asset under operating lease.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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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.

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Alta Mesa Resources, Inc. /DE 10-Q