XML 38 R26.htm IDEA: XBRL DOCUMENT
v3.20.2

Leases (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2020
Leases [Abstract] |
Schedule of Balance Sheet Impact | The impact of lease standard ASC 842 on the September 30, 2020 condensed consolidated balance sheet was as follows:
| Classification on the Condensed Consolidated Balance Sheet | September 30, 2020
|  | (in thousands, except years)
Operating lease assets | Right of use assets-operating leases | $ | 509 |
Current lease liabilities | Current operating leases | $ | 203 |
Noncurrent lease liabilities | Long-term operating leases | 306 |
Total lease liabilities |  | $ | 509 |
Weighted average remaining lease term in years |  | 3.1
Implicit Rate |  | 3.1 | %
Schedule of Cash Flow Impact |
| September 30, 2020
| (in thousands)
Cash paid for amounts included in the measurement of lease liabilities |
Operating lease cost (1) (2) | $ | 419 |
(1) Lease costs are classified on the condensed consolidated statements of operations in cost of sales, cost of compressors and selling, general and administrative expenses. (2) Includes costs of $275,000 for leases with terms of 12 months or less and $144,000 for leases with terms greater than 12 months.
Schedule of Future Maturities of Lease Liabilities | The following table shows the future maturities of lease liabilities as of September 30, 2020:
Years Ending December 31, |  | Lease Liabilities
|  | (in thousands)
2020 (excluding the nine months ended September 30, 2020) |  | $ | 54 |
2021 |  | 198 |
2022 |  | 65 |
2023 |  | 38 |
2024 |  | 38 |
Thereafter |  | 168 |
Total lease payments |  | 561 |
Less: Imputed interest |  | 52 |
Total |  | $ | 509 |

X
- Definition Assets And Liabilities, Lessee + References No definition available. + Details
Name: | ngs_AssetsAndLiabilitiesLesseeTableTextBlock
Namespace Prefix: | ngs_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
Name: | us-gaap_LeaseCostTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration