b'KOSMOS ENERGY LTD.Notes to Consolidated Financial Statements (Continued)2. Accounting Policies (Continued)amounts of assets, liabilities, revenues and expenses, and the disclosures of contingent assets andliabilities. Actual results could differ from these estimates.ReclassificationsCertain prior period amounts have been reclassified to conform with the current year presentation.Such reclassifications had no material impact on our reported net income (loss), current assets, totalassets, current liabilities, total liabilities, shareholders equity or cash flows, except as disclosed relatedto the adoption of recent accounting pronouncements.Cash, Cash Equivalents and Restricted CashDecember 31,2018 2017 2016(In thousands)Cash and cash equivalents . . . . . . . . . . . . . . . . . . . $173,515 $233,412 $194,057Restricted cashcurrent . . . . . . . . . . . . . . . . . . . . 4,527 56,380 24,506Restricted cashlong-term . . . . . . . . . . . . . . . . . . 7,574 15,194 54,632Total cash, cash equivalents and restricted cashshown in the consolidated statements of cashflows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $185,616 $304,986 $273,195Cash and cash equivalents includes demand deposits and funds invested in highly liquidinstruments with original maturities of three months or less at the date of purchase.In accordance with certain of our petroleum contracts, we have posted letters of credit related toperformance guarantees for our minimum work obligations. These letters of credit are cashcollateralized in accounts held by us and as such are classified as restricted cash. Upon completion ofthe minimum work obligations and/or entering into the next phase of the petroleum contract, therequirement to post the existing letters of credit will be satisfied and the cash collateral will bereleased. However, additional letters of credit may be required should we choose to move into the nextphase of certain of our petroleum contracts. As of December 31, 2018 and 2017, we had $4.5 millionand $31.6 million, respectively, of current restricted cash and $7.4 million and $15.2 million,respectively, of long-term restricted cash used to cash collateralize performance guarantees related toour petroleum contracts. As of December 31, 2018, we also had $0.2 million in other long-termrestricted cash.In addition, prior to our reserves-based debt facility (the Facility) being amended and restated inFebruary 2018, we were required to maintain a restricted cash balance that was sufficient to meet thepayment of interest and fees for the next six-month period on the 7.875% Senior Secured Notes due2021 (Senior Notes) plus the Corporate Revolver or the Facility, whichever was greater. As ofDecember 31, 2017, we had $24.8 million in current restricted cash to meet this requirement. Underthe amended and restated Facility, we are no longer required to maintain a restricted cash balanceprovided we are compliant with certain financial covenant ratios.111'