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Leases (Tables) | 12 Months Ended
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Dec. 31, 2022
Leases |
Schedule of operating and finance lease right-of-use assets and related lease obligations | ​
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​ | ​ | ​ | December 31, | ​ | December 31, | ​ | ​ | ​
Leases | Classification | ​ | 2022 |  | 2021 |  |  | ​
Assets | ​ | ​ | (in thousands) | ​ |  | ​
Operating leases | Operating lease assets | ​ | $ | 12,146 | ​ | $ | 9,242 | ​ | ​ | ​
Finance lease | Finance lease assets * | ​ |  | 17,942 | ​ |  | 19,238 | ​ | ​ | ​
Total leased assets | ​ | ​ | $ | 30,088 | ​ | $ | 28,480 | ​ | ​ | ​
Liabilities | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Current | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Operating | Other current liabilities | ​ | $ | 5,367 | ​ | $ | 4,716 | ​ | ​ | ​
Finance | Current portion of finance lease obligation | ​ | ​ | 1,229 | ​ | ​ | 979 | ​ | ​ | ​
Noncurrent | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Operating | Other long-term liabilities | ​ | ​ | 6,931 | ​ | ​ | 4,357 | ​ | ​ | ​
Finance | Finance lease obligation | ​ |  | 45,185 | ​ |  | 46,415 | ​ | ​ | ​
Total lease liabilities | ​ | ​ | $ | 58,712 | ​ | $ | 56,467 | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
*Finance lease assets are recorded net of accumulated depreciation of $45.9 million and includes $0.6 million of prepaid financing costs as of December 31, 2022. Finance lease assets are recorded net of accumulated depreciation of $48.6 million and includes $0.7 million of prepaid financing costs as of December 31, 2021. ​ | ​ | ​ | ​
Schedule of lease costs | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | Year ended |  | ​
​ | ​ | ​ | December 31, | ​ | ​
Lease cost | Classification |  | 2022 |  | 2021 |  | 2020 |  | ​
Operating lease cost | ​ | ​ | (in thousands) |  | ​
Product / Services* | Cost of revenue | ​ | $ | 5,427 | ​ | $ | 2,978 | ​ | $ | 2,402 | ​ | ​
Research and development | Operating expenses | ​ |  | 322 | ​ |  | 430 | ​ |  | 491 | ​ | ​
Sales and marketing* | Operating expenses | ​ |  | 1,526 | ​ |  | 1,605 | ​ |  | 1,389 | ​ | ​
General and administrative* | Operating expenses | ​ |  | 1,065 | ​ |  | 996 | ​ |  | 877 | ​ | ​
Total operating lease cost | ​ | ​ | $ | 8,340 | ​ | $ | 6,009 | ​ | $ | 5,159 | ​ | ​
Finance lease cost | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Depreciation of leased assets | Cost of revenue, R&D, Sales and marketing and G&A | ​ | $ | 1,296 | ​ | $ | 1,306 | ​ | $ | 1,336 | ​ | ​
Interest on lease liabilities | Interest expense | ​ |  | 4,992 | ​ |  | 5,086 | ​ |  | 5,211 | ​ | ​
Total finance lease cost | ​ | ​ | $ | 6,288 | ​ | $ | 6,392 | ​ | $ | 6,547 | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total lease cost | ​ | ​ | $ | 14,628 | ​ | $ | 12,401 | ​ | $ | 11,706 | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
* Product / services, sales and marketing and general and administrative expense also includes short-term lease and variable lease costs of approximately $1.8 million, $1.9 million and $1.2 million for the twelve months ended December 31, 2022, 2021 and 2020, respectively. | ​ | ​
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Schedule of future minimum operating and finance leases | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Finance | ​ | Operating |  | Total |
Maturity of Lease Liabilities | ​ | Leases | ​ | Leases | ​ | Leases | ​
​ | ​ | (in thousands) | ​
2023 | ​ | $ | 6,114 | ​ | $ | 6,588 | ​ | $ | 12,702 | ​
2024 | ​ |  | 6,252 | ​ |  | 3,292 | ​ |  | 9,544 | ​
2025 | ​ |  | 5,930 | ​ |  | 2,172 | ​ |  | 8,102 | ​
2026 | ​ |  | 6,008 | ​ |  | 1,602 | ​ |  | 7,610 | ​
2027 | ​ | ​ | 6,128 | ​ | ​ | 799 | ​ | ​ | 6,927 | ​
Thereafter | ​ | ​ | 61,586 | ​ | ​ | 13 | ​ | ​ | 61,599 | ​
Total lease payments | ​ | $ | 92,018 | ​ | $ | 14,466 | ​ | $ | 106,484 | ​
Less interest portion* | ​ | ​ | (45,604) | ​ | ​ | (2,168) | ​ | ​ | (47,772) | ​
Finance lease and operating lease obligations | ​ | $ | 46,414 | ​ | $ | 12,298 | ​ | $ | 58,712 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
* Finance lease interest calculated using the implied interest rate; operating lease interest calculated using estimated corporate borrowing rate. | ​
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Schedule of weighted-average remaining lease term and discount rates | ​
​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​
Lease term and discount rate |  | 2022 | ​
Weighted-average remaining lease term (years): | ​ | ​ | ​ | ​
Operating leases | ​ | ​ | 3.1 | ​
Finance leases | ​ |  | 14.1 | ​
Weighted-average discount rate: | ​ | ​ | ​ | ​
Operating leases | ​ |  | 4.5% | ​
Finance leases | ​ |  | 10.5% | ​
​ | ​ | ​ | ​ | ​
Schedule of cash outflows by lease type | ​
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​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year ended December 31, | ​
Cash paid for amounts included in the measurement of lease liabilities |  | 2022 |  | 2021 |  | 2020 | ​
​ | ​ | (in thousands) | ​
Operating cash outflows from operating leases | ​ | $ | 8,340 | ​ | $ | 6,009 | ​ | $ | 5,159 | ​
Operating cash outflows from finance leases | ​ |  | 4,992 | ​ |  | 5,086 | ​ |  | 5,321 | ​
Financing cash outflows from finance leases | ​ |  | 987 | ​ |  | 763 | ​ |  | 399 | ​
Operating lease assets obtained in exchange for operating lease liabilities | ​ |  | 6,173 | ​ |  | 8,670 | ​ |  | 2,369 | ​
Finance lease assets obtained in exchange for new finance lease liabilities | ​ |  | — | ​ |  | — | ​ |  | — | ​
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