The Company has financial instruments with off-balance sheet risk established in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. These instruments involve, to varying degrees, elements of credit and interest rate risk extending beyond amounts recognized in the financial statements.

The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is essentially the same as that involved with extending loans to customers. The Company uses the same credit underwriting policies in making commitments and conditional obligations as for on-balance sheet instruments.

Off-balance sheet commitments as of December 31 consist of the following (in thousands):

	2018		2017
Commitments to extend credit	$	687,875	$	661,021
Standby letters of credit		11,977		12,181

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the agreement. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Commitments may expire without being drawn upon; therefore, the total commitment amounts do not necessarily represent future cash requirements. Each customer’s creditworthiness is evaluated on a case-by-case basis. The amount of collateral obtained, if any, is based on management’s credit evaluation of the borrower. Standby letters of credit are conditional lending commitments issued by the Company to guarantee the performance of a customer to a third party. These standby letters of credit are primarily issued to support private borrowing arrangements. The credit risk involved in issuing standby letters of credit is essentially the same as that involved in extending loan facilities to customers.

The Company is obligated under a number of non-cancellable operating lease agreements for land, buildings and equipment. Certain of these leases provide for escalation clauses and contain renewal options calling for increased rentals if the lease is renewed. Future minimum payments by year and in the aggregate, under the non-cancellable leases with initial or remaining terms of one year or more, are as follows at December 31, 2018 (in thousands):

2019	$	2,495
2020		2,345
2021		2,152
2022		1,842
2023		1,655
Thereafter		29,232
	$	39,721

Rent expense relating to these operating leases, included in occupancy and equipment expense in the statements of income, was $2.9 million, $2.6 million and $2.1 million in 2018, 2017 and 2016, respectively.

In the ordinary course of business there are various threatened and pending legal proceedings against the Company. Based on consultation with outside legal counsel, management believes that the aggregate liability, if any, arising from such litigation would not have a material adverse effect on the Company’s consolidated financial statements.