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Leases (Tables) | 9 Months Ended
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Sep. 30, 2019
Leases [Abstract] |
Schedule of operating lease right-of-use assets and operating lease liabilities | Additionally, the table below includes the balances of operating lease right-of-use assets and operating lease liabilities as of September 30, 2019 (in thousands):
| Balance Sheet Classification |  | January 1, 2019 |  | September 30, 2019
Assets |  |  |  |  |
Operating lease right-of-use assets, net | Other Non-current Assets |  | $ | 13,634 |  |  | $ | 16,587 |
Total Lease Assets |  |  | $ | 13,634 |  |  | $ | 16,587 |
Liabilities |  |  |  |  |
Operating lease liabilities - Current | Other Accrued Expenses |  | $ | 3,519 |  |  | $ | 3,624 |
Operating lease liabilities - Noncurrent | Other Long-Term Liabilities |  | 13,652 |  |  | 15,867 |
Total Lease Liabilities |  |  | $ | 17,171 |  |  | $ | 19,491 |
Schedule of lease costs | The components of lease costs which were included within operating expenses in our condensed consolidated statements of income were as follows (in thousands):
| Three months ended September 30, |  | Nine months ended September 30,
| 2019 |  | 2019
Operating lease cost | $ | 1,210 |  |  | $ | 3,325 |
Short-term lease cost | 211 |  |  | 731 |
Variable lease cost | 362 |  |  | 1,054 |
Schedule of maturities operating lease liabilities | The maturities of our operating lease liabilities as of September 30, 2019 under ASC 842, excluding short-term leases with terms less than 12 months, were as follows (in thousands):
Maturity of Operating Lease Liabilities | September 30, 2019
Remainder 2019 | $ | 1,348 |
2020 | 4,440 |
2021 | 3,934 |
2022 | 3,965 |
2023 | 3,229 |
Thereafter | 6,310 |
Total lease payments | $ | 23,226 |
Less: Imputed interest | (3,735 | )
Present value of lease liabilities | $ | 19,491 |
Schedule of under ASC 840, including short-term leases with terms less than 12 months | The undiscounted maturities of our operating leases as of December 31, 2018 under ASC 840, including short-term leases with terms less than 12 months, were as follows (in thousands):
Maturity of Operating Leases | December 31, 2018
2019 | $ | 5,362 |
2020 | 3,386 |
2021 | 2,883 |
2022 | 2,920 |
2023 | 2,184 |
Thereafter | 5,582 |

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- 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=77888426&loc=SL77918686-209980 + Details
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- 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=77888426&loc=SL77918701-209980 + Details
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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + Details
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