XML 43 R33.htm IDEA: XBRL DOCUMENT
v3.20.2

Leases (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2020
Leases [Abstract] |
Future minimum lease payments | Future minimum lease payments for operating leases as of June 30, 2020 were as follows:
Year ending December 31, |  |
2020 (excluding the six months ended June 30, 2020) |  | $ | 616,477 |
2021 |  | 931,848 |
2022 |  | 617,178 |
2023 |  | 209,525 |
2024 |  | 12,555 |
Thereafter |  | 2,697 |
Total future minimum lease payments |  | 2,390,280 |
Less imputed interest |  | (25,703) |
Total |  | $ | 2,364,577 |
Lease liabilities |
Reported as of June 30, 2020 |  |
Accrued Liabilities |  | $ | 1,105,254 |
Other Non-Current Liabilities |  | 1,259,323 |
Total |  | $ | 2,364,577 |

X
- Definition Assets And Liabilities, Lessee + References No definition available. + Details
Name: | gntx_AssetsAndLiabilitiesLesseeTableTextBlock
Namespace Prefix: | gntx_
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