Leases (Tables)

12 Months Ended

Dec. 31, 2021

Leases

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

		December 31,		December 31,
Leases	Classification	2021		2020
Assets		(in thousands)
Operating leases	Operating lease assets	$	9,242	$	4,542
Finance lease	Finance lease assets *		19,238		20,544
Total leased assets		$	28,480	$	25,086
Liabilities
Current
Operating	Other current liabilities	$	4,716	$	2,573
Finance	Current portion of finance lease obligation		979		756
Noncurrent
Operating	Other long-term liabilities		4,357		1,949
Finance	Finance lease obligation		46,415		47,393
Total lease liabilities		$	56,467	$	52,671
* 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. Finance lease assets are recorded net of accumulated depreciation of $48.4 million and includes $0.7 million of prepaid financing costs as of December 31, 2020. ​

Schedule of lease costs

		Year ended
		December 31,
Lease cost	Classification	2021		2020		2019
Operating lease cost		(in thousands)
Service	Cost of revenue	$	2,978	$	2,402	$	2,315
Research and development	Operating expenses		430		491		313
Sales and marketing*	Operating expenses		1,605		1,389		1,378
General and administrative*	Operating expenses		996		877		788
Total operating lease cost		$	6,009	$	5,159	$	4,794
Finance lease cost
Depreciation of leased assets	Cost of revenue, R&D, Sales and marketing and G&A	$	1,306	$	1,336	$	1,348
Interest on lease liabilities	Interest expense		5,086		5,211		5,155
Total finance lease cost		$	6,392	$	6,547	$	6,503
Total lease cost		$	12,401	$	11,706	$	11,297
* Sales and marketing and general and administrative expense also includes short-term lease and variable lease costs of approximately $1.9 million, $1.2 million and $0.9 million for the twelve months ended December 31, 2021, 2020 and 2019, respectively.

Schedule of future minimum operating and finance leases

	Finance		Operating		Total
Maturity of Lease Liabilities	Leases		Leases		Leases
	(in thousands)
2022	$	5,980	$	4,939	$	10,919
2023		6,114		2,610		8,724
2024		6,252		902		7,154
2025		5,930		700		6,630
2026		6,008		464		6,472
Thereafter		67,715		73		67,788
Total lease payments	$	97,999	$	9,688	$	107,687
Less interest portion*		(50,605)		(615)		(51,220)
Finance lease and operating lease obligations	$	47,394	$	9,073	$	56,467
* 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

	December 31,
Lease term and discount rate	2021
Weighted-average remaining lease term (years):
Operating leases		2.6
Finance leases		15.1
Weighted-average discount rate:
Operating leases		4.5%
Finance leases		10.5%

Schedule of cash outflows by lease type

	Year ended December 31,
Cash paid for amounts included in the measurement of lease liabilities	2021		2020		2019
	(in thousands)
Operating cash outflows from operating leases	$	6,009	$	5,159	$	4,794
Operating cash outflows from finance leases		5,086		5,321		5,594
Financing cash outflows from finance leases		763		399		—
Operating lease assets obtained in exchange for operating lease liabilities		8,670		2,369		5,849
Finance lease assets obtained in exchange for new finance lease liabilities		—		—		—