Note 11. Commitments and Contingencies Litigation In the normal course of business the Company is involved in various legal proceedings. Management believes that the outcome of such proceedings will not materially affect the financial position, results of operations or cash flows of the Company. Financial Instruments with Off-balance-sheet Risk The Company is party to financial instruments with off-balance-sheet risk 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, credit risk in excess of the amount recognized in the balance sheet. The Companys 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 represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as for on-balance-sheet instruments. A summary of the Companys commitments is as follows: June 30, 2019 December 31, 2018 Commitments to extend credit $ 1,641,814 $ 1,435,024 Standby letters of credit 12,285 2,150 Airplane purchase agreement commitments  10,450 Total unfunded off-balance-sheet credit risk $ 1,654,099 $ 1,447,624 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customers creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on managements credit evaluation of the party. Collateral held varies, but may include accounts receivable, inventory, property and equipment, residential real estate and income-producing commercial properties. In 2012, the Company began issuing commitment letters after approval of the loan by the Credit Department. Commitment letters generally expire ninety days after issuance. Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support public and private borrowing arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. Collateral held varies as specified above and is required in instances which the Company deems necessary. As of June 30, 2019 and December 31, 2018, the Company had unfunded commitments to provide capital contributions for on-balance-sheet investments in the amount of $1.6 million and $2.8 million, respectively. Concentrations of Credit Risk Although the Company is not subject to any geographic concentrations, a substantial amount of the Companys loans, leases, and commitments to extend credit have been granted to customers in the agriculture, healthcare and veterinary verticals. The concentrations of credit by type of loan are set forth in Note 5. The distribution of commitments to extend credit approximates the distribution of loans outstanding. The Company does not have a significant number of credits to any single borrower or group of related borrowers whereby their retained unguaranteed exposure exceeds $7.5 million, except for 16 relationships that have a retained unguaranteed exposure of $193.0 million of which $137.0 million of the unguaranteed exposure has been disbursed. Additionally, the Company has future minimum lease payments due under non-cancelable operating leases totaling $87.8 million, of which $63.7 million is due from four relationships. The Company from time-to-time may have cash and cash equivalents on deposit with financial institutions that exceed federally-insured limits.