3.	Long-Term Debt and Notes Payable

The Company maintains a credit agreement, which until April 2016 included a revolving line of credit, with a bank lender. As of January 31, 2016, February 29, 2016 and March 31, 2016, the Company failed to comply with the asset coverage ratio covenant in such credit agreement. In connection with entering into Agreement and Amendment No. 7 to the Credit Agreement referred to below (the “Amended Credit Agreement”), the bank lender waived non-compliance with the asset coverage ratio for the months of January, February and March 2016.

As of December 31, 2016, the Company’s outstanding debt under its Amended Credit Agreement was $55,901, of which $13,000 was classified as current and $42,901 was classified as long-term. As of December 31, 2016, the Company had $497 of debt issuance costs that are presented as a direct reduction from the carrying amount of the long-term debt obligation. For the year ended December 31, 2016, the weighted average interest rate was 6.447% based on LIBOR-based rate borrowings. The Company had $11,980 and $8,875 in standby letters of credit issued as of December 31, 2016 and December 31, 2015, respectively, primarily as collateral relating to our natural gas commitments and railcar leases. As of December 31, 2015, the Company’s outstanding debt under the prior credit agreement was $88,000, of which $33,000 was classified as current and $55,000 was classified as long-term. As of December 31, 2015, the weighted average interest rate was 4.664% based on LIBOR-based rate borrowings. Interest cost for the years ended December 31, 2016, 2015 and 2014 was $6,022, $2,973 and $135, respectively, of which $80 and $2,038 was capitalized into the cost of property, plant and equipment in the years ended December 31, 2016 and 2015, respectively. No interest was capitalized in 2014.

In April 2016, the Company restructured its revolving credit agreement by entering into the Amended Credit Agreement, as it is reasonably likely the Company would have been unable to comply with certain financial covenants under the prior credit agreement. The Amended Credit Agreement consists of a $65,000 fully drawn term loan, which replaced the previous $90,000 revolving line of credit, and up to $15,000 in standby letters of credit. The Company’s obligations under the Amended Credit Agreement are secured by a pledge of substantially all of the Company’s domestic assets and guaranteed by its two domestic operating subsidiaries. Such obligations bear interest at a floating rate of LIBOR plus 7.00%. Under the Amended Credit Agreement, all of the cash of the Company, including any of the subsidiary guarantors, that is held in U.S. banks must be deposited into accounts at the administrative agent and therefore will be subject to set-off in the event, and to the extent, CARBO Ceramics Inc. or any of the subsidiary guarantors is unable to satisfy its obligations under the Amended Credit Agreement. The Amended Credit Agreement requires minimum quarterly repayments of principal of $3,250 per quarter until its maturity on December 31, 2018. The Amended Credit Agreement eliminates the financial covenants contained in the prior credit agreement, but instead requires the Company to maintain minimum cash amounts held with the administrative agent at the end of each calendar month commencing August 2016 as follows: $40,000 from August 2016 until March 2017; $30,000 from April 2017 until December 2017; and $25,000 thereafter. The Company is required to use proceeds from the sale of certain assets to repay principal amounts outstanding under the Amended Credit Agreement.

In January 2017, the Company repaid $3,250 under its Amended Credit Agreement. As of February 28, 2017, the Company’s outstanding debt under the Amended Credit Agreement was $52,651.

In May 2016, the Company received proceeds of $25,000 from the issuance of separate unsecured Promissory Notes (the “Notes”) to two of the Company’s Directors. Each Note matures on April 1, 2019 and bears interest at 7.00%. Additionally, in May 2016, each of those directors entered into a Subordination and Intercreditor Agreement with the Company’s bank lender, which, among other things, provides that each Note is subordinated to the indebtedness outstanding under the Amended Credit Agreement.

In June 2016, the Company entered into an agreement with a financing company to finance certain insurance premiums in the amount of $1,468. Payments are due monthly through April 1, 2017 with an effective interest rate of 0.75%. The liability is included in Notes Payable within Current Liabilities on the Consolidated Balance Sheet. As of December 31, 2016, the outstanding balance was $551.