We maintain lease agreements principally for our office spaces and certain equipment. We maintain two sublease agreements with respect to one of our office locations, each of which continues through the initial term of our master lease agreement. Such sublease income and payments, while they reduce our rent expense, are not considered in the value of the right-of-use asset or lease liability. With the exception of two finance leases related to a network server and office equipment, all of our leases are classified as operating leases. In the aggregate, our leases generally have remaining lease terms of three to 36 months, some of which include options to extend the lease for additional periods. Such extension options were not considered in the value of the right-of-use asset or lease liability because it is not probable that we will exercise the options to extend. If applicable, allocations among lease and non-lease components would be achieved using relative standalone selling prices.

The following table shows the components of lease expense for the three and nine months ended September 30, 2021 and 2020:

	Three Months Ended September 30,						Nine Months Ended September 30,
(In thousands)	2021			2020			2021			2020
Finance lease cost:
Amortization of leased assets	$	156		$	162		$	470		$	485
Interest of lease liabilities		9			19			35			67
Operating lease cost		1,883			1,960			5,695			5,879
Total lease cost before subleases	$	2,048		$	2,141		$	6,200		$	6,431
Sublease income		(1,344	)		(1,344	)		(4,033	)		(4,108	)
Total lease cost, net	$	704		$	797		$	2,167		$	2,323

	Three Months Ended September 30,						Nine Months Ended September 30,
(In thousands)	2021			2020			2021			2020
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flow attributable to operating leases	$	(100	)	$	(1,560	)	$	(2,457	)	$	(3,770	)
Operating cash flow attributable to finance leases		(9	)		(19	)		(35	)		(67	)
Financing cash flow attributable to finance leases		(162	)		(158	)		(477	)		(464	)

For the three and nine months ended September 30, 2021 and 2020, there were no noncash transactions related to leases.