Leases (Tables)

9 Months Ended

Sep. 30, 2021

Leases

Schedule of operating and finance lease right-of-use assets and related lease obligations

		September 30,		December 31,
Leases	Classification	2021		2020
Assets		(in thousands)
Operating leases	Operating lease assets	$	8,106	$	4,542
Finance lease	Finance lease assets *		19,563		20,544
Total leased assets		$	27,669	$	25,086
Liabilities
Current
Operating	Other current liabilities	$	3,874	$	2,573
Finance	Current portion of finance lease obligation		921		756
Noncurrent
Operating	Other long-term liabilities		4,220		1,949
Finance	Finance lease obligation		46,672		47,393
Total lease liabilities		$	55,687	$	52,671
* Finance lease assets are recorded net of accumulated depreciation of $49.2 million and include $0.7 million of prepaid financing costs as of September 30, 2021. Finance lease assets are recorded net of accumulated depreciation of $48.4 million and include $0.7 million of prepaid financing costs as of December 31, 2020. ​

Schedule of lease costs

		Three months ended				Nine months ended
		September 30,				September 30,
Lease cost	Classification	2021		2020		2021		2020
Operating lease cost		(in thousands)
Service	Cost of revenue	$	790	$	601	$	2,074	$	1,776
Research and development	Operating expenses		114		137		366		347
Sales and marketing*	Operating expenses		414		347		1,169		1,024
General and administrative*	Operating expenses		254		213		714		648
Total operating lease cost		$	1,572	$	1,298	$	4,323	$	3,795
Finance lease cost
Depreciation of leased assets	Cost of revenue, R&D, Sales and marketing and G&A	$	326	$	328	$	981	$	1,009
Interest on lease liabilities	Interest expense		1,269		1,296		3,822		3,898
Total finance lease cost		$	1,595	$	1,624	$	4,803	$	4,907
Total lease cost		$	3,167	$	2,922	$	9,126	$	8,702
* Sales and marketing and general and administrative expense also includes short-term lease and variable lease costs of approximately $0.6 million and $1.4 million for the three and nine months ended September 30, 2021, respectively, and includes short-term and variable lease costs of approximately $0.3 million and $0.8 million for the three and nine months ended September 30, 2020, respectively.

Schedule of future minimum operating and finance leases

	Finance		Operating		Total
Maturity of Lease Liabilities	Leases		Leases		Leases
	(in thousands)
2021	$	1,465	$	1,127	$	2,592
2022		5,980		3,980		9,960
2023		6,114		1,849		7,963
2024		6,252		838		7,090
2025		5,930		692		6,622
Thereafter		73,723		531		74,254
Total lease payments	$	99,464	$	9,017	$	108,481
Less interest portion*		(51,871)		(923)		(52,794)
Finance lease and operating lease obligations	$	47,593	$	8,094	$	55,687
* Finance lease interest calculated using the implied interest rate; operating lease interest calculated using estimated corporate borrowing rate.

Schedule of weighted-average remaining lease term and discount rates

	September 30,
Lease term and discount rate	2021
Weighted-average remaining lease term (years):
Operating leases		3.0
Finance leases		15.3
Weighted-average discount rate:
Operating leases		4.5%
Finance leases		10.5%

Schedule of cash outflows by lease type

	Nine months ended
	September 30,
Cash paid for amounts included in the measurement of lease liabilities	2021		2020
	(in thousands)
Operating cash outflows from operating leases	$	4,323	$	3,795
Operating cash outflows from finance leases		3,821		4,035
Financing cash outflows from finance leases		562		252
Operating lease assets obtained in exchange for operating lease liabilities		6,396		1,658
Finance lease assets obtained in exchange for new finance lease liabilities	$	—	$	—