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LEASES (Tables)

9 Months Ended

Sep. 30, 2021

LEASES

Summary of components of lease expense

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

​	​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	​	​	​	​
​	Three months ended September 30, 2021		​	Three months ended September 30, 2020		​	Nine months ended September 30, 2021		​	Nine months ended September 30, 2020
Operating lease cost:	​	​	​	​	​	​	​	​	​	​	​
Operating lease cost	$	5,921	​	$	4,152	​	$	14,395	​	$	12,228
Short-term lease cost	​	661	​	​	769	​	​	1,798	​	​	2,040
Variable lease cost	​	633	​	​	692	​	​	2,713	​	​	3,034
Total operating lease cost	$	7,215	​	$	5,613	​	$	18,906	​	$	17,302
​	​	​	​	​	​	​	​	​	​	​	​
Finance lease cost:	​	​	​	​	​	​	​	​	​	​	​
Amortization of right-of-use asset	$	618	​	$	534	​	$	1,807	​	$	1,628
Variable costs	​	194	​	​	198	​	​	586	​	​	655
Total finance lease cost	$	812	​	$	732	​	$	2,393	​	$	2,283

Summary of weighted-average remaining lease term and discount rate

The weighted average remaining lease terms and discount rates as of September 30, 2021 and December 31, 2020 are noted in the table below:

​

​	​	​	​	​	​
​	September 30, 2021		​	December 31, 2020
Weighted-average remaining lease term	​	​	​	​	​
Operating leases	​	11.5 years	​	​	5.9 years
Financing leases	​	10.5 years	​	​	10.9 years
​	​	​	​	​	​
Weighted-average discount rate	​	​	​	​	​
Operating leases	​	5.4%	​	​	5.0%
Financing leases	​	7.1%	​	​	3.3%

Summary of maturities of operating lease liabilities

Maturities of lease liabilities as of September 30, 2021 were as follows (in thousands):

​

​	​	​	​	​	​
​	Operating Leases		​	Financing Leases
2021 (excluding the nine months ended September 30, 2021)	$	4,227	​	$	263
2022	​	20,976	​	​	945
2023	​	17,686	​	​	954
2024	​	16,402	​	​	845
2025	​	13,422	​	​	721
Thereafter	​	73,831	​	​	3,630
Total lease payments	​	146,544	​	​	7,358
Less imputed interest	​	(41,332)	​	​	(2,283)
Total	$	105,212	​	$	5,075

​

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

​

​	​	​	​	​	​
​	Operating Leases		​	Financing Leases
2021	$	14,877	​	$	334
2022	​	14,202	​	​	333
2023	​	11,799	​	​	333
2024	​	10,633	​	​	211
2025	​	7,816	​	​	—
Thereafter	​	13,094	​	​	—
Total lease payments	​	72,421	​	​	1,211
Less imputed interest	​	(10,097)	​	​	(82)
Total	$	62,324	​	$	1,129

Summary of maturities of finance lease liabilities

​

​	​	​	​	​	​
​	Operating Leases		​	Financing Leases
2021 (excluding the nine months ended September 30, 2021)	$	4,227	​	$	263
2022	​	20,976	​	​	945
2023	​	17,686	​	​	954
2024	​	16,402	​	​	845
2025	​	13,422	​	​	721
Thereafter	​	73,831	​	​	3,630
Total lease payments	​	146,544	​	​	7,358
Less imputed interest	​	(41,332)	​	​	(2,283)
Total	$	105,212	​	$	5,075

​

​	​	​	​	​	​
​	Operating Leases		​	Financing Leases
2021	$	14,877	​	$	334
2022	​	14,202	​	​	333
2023	​	11,799	​	​	333
2024	​	10,633	​	​	211
2025	​	7,816	​	​	—
Thereafter	​	13,094	​	​	—
Total lease payments	​	72,421	​	​	1,211
Less imputed interest	​	(10,097)	​	​	(82)
Total	$	62,324	​	$	1,129

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The tabular disclosure of weighted-average remaining lease term and discount rate.

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- Definition

Tabular disclosure of undiscounted cash flows of finance lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to finance 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=121609121&loc=SL77918701-209980

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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=121609121&loc=SL77918686-209980

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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=121609121&loc=SL77918701-209980

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