Leases (Tables)

12 Months Ended

Dec. 31, 2020

The Company’s lease assets and related lease liabilities were as follows (in thousands):

		December 31,
	Balance Sheet Line Item	2020			2019
Assets
Finance:
Right-of-use assets - cost		$	50,477		$	49,909
Accumulated amortization			(20,871	)		(10,307	)
Finance lease right-of-use assets, net	Finance lease right-of-use assets		29,606			39,602
Operating:
Right-of-use assets - cost			3,934			2,736
Accumulated amortization			(1,891	)		(805	)
Operating lease right-of-use assets, net	Other assets		2,043			1,931
Total lease assets		$	31,649		$	41,533

Liabilities
Current:
Finance lease liabilities	Finance lease liabilities, current	$	12,330		$	12,351
Operating lease liabilities	Accrued and other current liabilities		1,188			983
Non-current:
Finance lease liabilities	Finance lease liabilities, non-current		25,391			37,610
Operating lease liabilities	Other long-term liabilities		853			942
Total lease liabilities		$	39,762		$	51,886

The components of lease expense were as follows (in thousands):

		Years Ended December 31,
	Statement of Operations Line Item	2020			2019
Finance lease cost:
Amortization of right-of-use assets	Cost of goods sold; Research and development; Selling, general and administrative expenses	$	10,369		$	10,307
Interest on lease liabilities	Interest expense		1,932			2,373
Operating lease cost	Cost of goods sold; Research and development; Selling, general and administrative expenses		1,151			891
Sublease income	Selling, general and administrative expenses		(1,201	)		(1,385	)
Total lease cost		$	12,251		$	12,186

Supplemental cash flow information related to leases were as follows (in thousands):

	Years Ended December 31,
	2020		2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	951	$	914
Operating cash flows from finance leases		1,896		2,196
Financing cash flows from finance leases		12,620		11,925
Right-of-use assets obtained in exchange for new lease liabilities:
Finance leases		662		49,909
Operating leases	$	1,072	$	2,736

Lease term and discount rate were as follows:

	December 31,
	2020			2019
Weighted-average remaining lease term (years):
Finance leases		2.9			3.6
Operating leases		1.8			2.1
Weighted-average discount rate:
Finance leases		4.39	%		4.42	%
Operating leases		4.74	%		4.75	%

Maturities of lease liabilities as of December 31, 2020 are as follows (in thousands):

Year Ending December 31,	Finance Leases			Operating Leases
2021	$	13,689		$	1,142
2022		13,886			839
2023		12,526			143
Total future lease payments		40,101			2,124
Less: Interest		(2,380	)		(83	)
Present value of lease liabilities	$	37,721		$	2,041