Form S-I •fable of Contents Blue Buffalo Pet Products, Inc. Notes to Unaudited Condensed Consolidated Financial Statements (Continued) 3.82% and no outstanding borrowings under the revolving credit facility. Principal payments on the term loan borrowings are due and payable in quarterly installments of approximately $1.0 million with the then expected remaining balance of $373.2 million due on August 8. 2019. During the three-month periods ended March 31, 2014 and March 31, 2015, the Company recorded amortization expense for deferred debt issuance costs of approximately $30,000. The Amended Facility contains and defines financial covenants, including a secured leverage ratio (defined as, with certain adjustments. the ratio of (i) the Company's indebtedness less unrestricted cash and cash equivalents up to $40 million to (ii) consolidated net income before interest, taxes, depreciation, and amortization) not to exceed (a) December 31, 2014 and March 31, 2015.4.25:1.00, (b) June 30, 2015 and September 30, 2015, 4.00:1.00, and (c) if such periods ends on or after December 31, 2015, 3.75:1.00. The Amended Facility also sets forth mandatory and optional prepayment conditions. including an annual excess cash flow requirement. as defined, that may result in our use of cash to reduce our debt obligations. For the year ended December 31, 2014. the Company was not required to make an excess cash flow payment. As of March 31, 2015, the Company believes it was in compliance with its financial debt covenants. Note 7 - Fair Value Measurements The Company's financial instruments consist of cash and cash equivalents, accounts receivable, accounts payable, other current liabilities, deferred compensation, and debt, none of which are measured at fair value on a recurring basis. The carrying amounts of cash and cash equivalents, accounts receivable, accounts payable, and other current liabilities approximate their fair value due to the short-term nature of these fina