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Long-Term Debt | 12 Months Ended
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Dec. 31, 2015
Debt Disclosure [Abstract] |
Long-Term Debt | 9. Long-Term Debt Long-term debt consisted of the following (in thousands):
| December 31,
| 2015 |  | 2014
Revolving credit facility due July 2016 | $ | — |  |  | $ | 375,500 |
Revolving credit facility due November 2020 | 166,500 |  |  | — |
Partnership’s revolving credit facility due May 2018 | 580,500 |  |  | 460,000 |
Partnership’s term loan facility due May 2018 | 150,000 |  |  | 150,000 |
Partnership’s 6% senior notes due April 2021 (presented net of the unamortized discount of $3.9 million and $4.5 million, respectively) | 346,138 |  |  | 345,528 |
Partnership’s 6% senior notes due October 2022 (presented net of the unamortized discount of $4.7 million and $5.2 million, respectively) | 345,327 |  |  | 344,767 |
7.25% senior notes due December 2018 | — |  |  | 350,000 |
Long-term debt | $ | 1,588,465 |  |  | $ | 2,025,795 |
Archrock Revolving Credit Facility In October 2015, in connection with the Spin-off, we entered into a five-year, $350.0 million revolving credit facility (the “Credit Facility”). Availability under the Credit Facility was subject to the satisfaction of certain conditions precedent, including (i) the payoff and termination of our former credit facility and (ii) the consummation of the Spin-off on or before January 4, 2016 (the date on which those conditions are satisfied is referred to as the “Archrock Initial Availability Date”). As a result of the completion of the Spin-off, the Archrock Initial Availability Date was November 3, 2015 and the Credit Facility will mature in November 2020. We incurred approximately $3.7 million in transaction costs related to the Credit Facility during the year ended December 31, 2015. These costs are included in Intangibles and other assets, net and will be amortized over the term of the facility. On November 3, 2015, we terminated our former credit facility and repaid $326.5 million in borrowings and accrued and unpaid interest outstanding on the repayment date. As a result of the modification, we wrote-off $0.4 million related to unamortized deferred financing costs associated with the former credit facility in the fourth quarter of 2015, which is included in interest expense in our consolidated statements of operations. As of December 31, 2015, we had $166.5 million in outstanding borrowings and $10.0 million in outstanding letters of credit under the Credit Facility. At December 31, 2015, taking into account guarantees through letters of credit, we had undrawn and available capacity of $173.5 million under the Credit Facility. Borrowings under the Credit Facility bear interest at a base rate or LIBOR, at our option, plus an applicable margin. Depending on our Total Leverage Ratio (as defined in the credit agreement), the applicable margin for revolving loans varies (i) in the case of LIBOR loans, from 1.75% to 2.75% and (ii) in the case of base rate loans, from 0.75% to 1.75%. The base rate is the highest of the prime rate announced by Wells Fargo Bank, National Association, the Federal Funds Rate plus 0.5% and one-month LIBOR plus 1.0%. At December 31, 2015, all amounts outstanding under the Credit Facility were LIBOR loans and the applicable margin was 1.75%. The weighted average annual interest rate at both December 31, 2015 and 2014 on the outstanding balance under the Credit Facility was 2.1% and 1.7%, respectively. We and our Significant Domestic Subsidiaries (as defined in the credit agreement) guarantee the debt under the Credit Facility. Borrowings under the Credit Facility are secured by substantially all of the personal property assets and certain real property assets of us and our Significant Domestic Subsidiaries, including all of the equity interests of our U.S. subsidiaries (other than certain excluded subsidiaries). The Partnership does not guarantee the debt under the Credit Facility, its assets are not collateral under the Credit Facility and the general partner units in the Partnership are not pledged under the Credit Facility. Subject to certain conditions, at our request, and with the approval of the lenders, the aggregate commitments under the Credit Facility may be increased by up to an additional $100 million. The Credit Facility contains various covenants with which we or certain of our subsidiaries must comply, including, but not limited to, limitations on the incurrence of indebtedness, investments, liens on assets, repurchasing equity and making distributions, transactions with affiliates, mergers, consolidations, dispositions of assets and other provisions customary in similar types of agreements. We are also subject to financial covenants, including a ratio of earnings before interest, taxes, depreciation and amortization (“EBITDA”) (as defined in the credit agreement) to Total Interest Expense (as defined in the credit agreement) of not less than 2.25 to 1.0 and a ratio of consolidated Total Debt (as defined in the credit agreement) to EBITDA of not greater than 4.25 to 1.0 (subject to a temporary increase to 4.75 to 1.0 for any quarter during which an acquisition meeting certain thresholds is completed and for the following two quarters after the acquisition closes). The Partnership Revolving Credit Facility and Term Loan In November 2010, the Partnership entered into an amendment and restatement of its senior secured credit agreement (the “Partnership Credit Agreement”) to provide for a five-year $550.0 million senior secured credit facility, consisting of a $400.0 million revolving credit facility and a $150.0 million term loan facility. The revolving borrowing capacity under this facility was increased to $550.0 million in March 2011 and to $750.0 million in March 2012. In March 2013, the Partnership Credit Agreement was amended to reduce the borrowing capacity under its revolving credit facility to $650.0 million and extend the maturity date of the term loan and revolving credit facilities to May 2018. As a result of the March 2013 amendment, we expensed $0.7 million of unamortized deferred financing costs, which is reflected in interest expense in our consolidated statements of operations. In February 2015, the Partnership amended the Partnership Credit Agreement, which among other things, increased the borrowing capacity under its revolving credit facility by $250.0 million to $900.0 million. During the years ended December 31, 2015 and 2014 the Partnership incurred transaction costs of approximately $1.3 million and $4.3 million, respectively, related to the amendments to the Partnership Credit Agreement. These costs were included in intangible and other assets, net, and are being amortized over the terms of the facilities. As of December 31, 2015, the Partnership had undrawn and available capacity of $319.5 million under its revolving credit facility. The Partnership’s revolving credit and term loan facilities bear interest at a base rate or LIBOR, at the Partnership’s option, plus an applicable margin. Depending on the Partnership’s leverage ratio, the applicable margin for the revolving and term loans varies (i) in the case of LIBOR loans, from 2.0% to 3.0% and (ii) in the case of base rate loans, from 1.0% to 2.0%. The base rate is the highest of the prime rate announced by Wells Fargo Bank, National Association, the Federal Funds Effective Rate plus 0.5% and one-month LIBOR plus 1.0%. At December 31, 2015, all amounts outstanding under these facilities were LIBOR loans and the applicable margin was 2.5%. The weighted average annual interest rate on the outstanding balance of these facilities at December 31, 2015 and 2014, excluding the effect of interest rate swaps, was 2.8% and 2.7%, respectively. Borrowings under the Partnership Credit Agreement are secured by substantially all of the U.S. personal property assets of the Partnership and its Significant Domestic Subsidiaries (as defined in the Partnership Credit Agreement), including all of the membership interests of the Partnership’s Domestic Subsidiaries (as defined in the Partnership Credit Agreement). As of December 31, 2015, subject to certain conditions, at our request, and with the approval of the lenders, the aggregate commitments under the Partnership Credit Agreement could be increased by up to an additional $50 million. The Partnership Credit Agreement contains various covenants with which the Partnership must comply, including, but not limited to, restrictions on the use of proceeds from borrowings and limitations on the Partnership’s ability to incur additional indebtedness, engage in transactions with affiliates, merge or consolidate, sell assets, make certain investments and acquisitions, make loans, grant liens, repurchase equity and pay dividends and distributions. The Partnership Credit Agreement also contains various covenants requiring mandatory prepayments from the net cash proceeds of certain asset transfers. The Partnership must maintain various consolidated financial ratios, including a ratio of EBITDA (as defined in the Partnership Credit Agreement) to Total Interest Expense (as defined in the Partnership Credit Agreement) of not less than 2.75 to 1.0, a ratio of Total Debt (as defined in the Partnership Credit Agreement) to EBITDA of not greater than 5.25 to 1.0 (subject to a temporary increase to 5.5 to 1.0 for any quarter during which an acquisition meeting certain thresholds is completed and for the following two quarters after the acquisition closes) and a ratio of Senior Secured Debt (as defined in the Partnership Credit Agreement) to EBITDA of not greater than 4.0 to 1.0. Because the Partnership completed an acquisition meeting certain thresholds during the second quarter of 2015 (see Note 19 (“Transactions Related to the Partnership”) for further discussion), the Partnership’s Total Debt to EBITDA ratio threshold was temporarily increased to 5.5 to 1.0 during the quarter ended June 30, 2015 and continued at that level through December 31, 2015, reverting to 5.25 to 1.0 for the quarter ending March 31, 2016 and subsequent quarters. A material adverse effect with respect to the Partnership’s assets, liabilities, financial condition, business or operations that, taken as a whole, impacts the Partnership’s ability to perform its obligations under the Partnership Credit Agreement, could lead to a default under that agreement. A default under one of the Partnership’s debt agreements would trigger cross-default provisions under the Partnership’s other debt agreements, which would accelerate the Partnership’s obligation to repay its indebtedness under those agreements. As of December 31, 2015, the Partnership was in compliance with all financial covenants under the Partnership Credit Agreement. The Partnership 6% Senior Notes Due April 2021 In March 2013, the Partnership issued $350.0 million aggregate principal amount of 6% senior notes due April 2021 (the “Partnership 2013 Notes”). The Partnership used the net proceeds of $336.9 million, after original issuance discount and issuance costs, to repay borrowings outstanding under its revolving credit facility. The Partnership incurred $7.8 million in transaction costs related to this issuance. These costs were included in intangible and other assets, net, and are being amortized to interest expense over the term of the Partnership 2013 Notes. The Partnership 2013 Notes were issued at an original issuance discount of $5.5 million, which is being amortized using the effective interest method at an interest rate of 6.25% over their term. During the years ended December 31, 2015, 2014 and 2013, the Partnership recognized $0.6 million, $0.5 million and $0.4 million, respectively, of interest expense related to amortization of the debt discount. In January 2014, holders of the Partnership 2013 Notes exchanged their Partnership 2013 Notes for registered notes with the same terms. The Partnership 2013 Notes are guaranteed on a senior unsecured basis by all of the Partnership’s existing subsidiaries (other than Archrock Partners Finance Corp. (“APLP Finance Corp.”), which is a co-issuer of the Partnership 2013 Notes) and certain of the Partnership’s future subsidiaries. The Partnership 2013 Notes and the guarantees, respectively, are the Partnership’s and the guarantors’ general unsecured senior obligations, rank equally in right of payment with all of the Partnership’s and the guarantors’ other senior obligations, and are effectively subordinated to all of the Partnership’s and the guarantors’ existing and future secured debt to the extent of the value of the collateral securing such indebtedness. In addition, the Partnership 2013 Notes and guarantees are effectively subordinated to all existing and future indebtedness and other liabilities of any future non-guarantor subsidiaries. Prior to April 1, 2017, the Partnership may redeem all or a part of the Partnership 2013 Notes at a redemption price equal to the sum of (i) the principal amount thereof, plus (ii) a make-whole premium at the redemption date, plus accrued and unpaid interest, if any, to the redemption date. In addition, the Partnership may redeem up to 35% of the aggregate principal amount of the Partnership 2013 Notes prior to April 1, 2016 with the net proceeds of one or more equity offerings at a redemption price of 106.00% of the principal amount of the Partnership 2013 Notes, plus any accrued and unpaid interest to the date of redemption, if at least 65% of the aggregate principal amount of the Partnership 2013 Notes issued under the indenture remains outstanding after such redemption and the redemption occurs within 180 days of the date of the closing of such equity offering. On or after April 1, 2017, the Partnership may redeem all or a part of the Partnership 2013 Notes at redemption prices (expressed as percentages of principal amount) equal to 103.00% for the twelve-month period beginning on April 1, 2017, 101.500% for the twelve-month period beginning on April 1, 2018 and 100.00% for the twelve-month period beginning on April 1, 2019 and at any time thereafter, plus accrued and unpaid interest, if any, to the applicable redemption date on the Partnership 2013 Notes. The Partnership 6% Senior Notes Due October 2022 In April 2014, the Partnership issued $350.0 million aggregate principal amount of the Partnership 2014 Notes. The Partnership received net proceeds of $337.4 million, after original issuance discount and issuance costs, from this offering, which it used to fund a portion of the April 2014 MidCon Acquisition and repay borrowings under its revolving credit facility. The Partnership incurred $6.9 million in transaction costs related to this issuance. These costs were included in intangible and other assets, net, and are being amortized to interest expense over the term of the Partnership 2014 Notes. The Partnership 2014 Notes were issued at an original issuance discount of $5.7 million, which is being amortized using the effective interest method at an interest rate of 6.25% over their term. During the years ended December 31, 2015 and 2014, the Partnership recognized $0.6 million and $0.5 million, respectively, of interest expense related to amortization of the debt discount. In February 2015, holders of the Partnership 2014 Notes exchanged their Partnership 2014 Notes for registered notes with the same terms. The Partnership 2014 Notes are guaranteed on a senior unsecured basis by all of the Partnership’s existing subsidiaries (other than APLP Finance Corp., which is a co-issuer of the Partnership 2014 Notes) and certain of the Partnership’s future subsidiaries. The Partnership 2014 Notes and the guarantees, respectively, are the Partnership’s and the guarantors’ general unsecured senior obligations, rank equally in right of payment with all of the Partnership’s and the guarantors’ other senior obligations, and are effectively subordinated to all of the Partnership’s and the guarantors’ existing and future secured debt to the extent of the value of the collateral securing such indebtedness. In addition, the Partnership 2014 Notes and guarantees are effectively subordinated to all existing and future indebtedness and other liabilities of any future non-guarantor subsidiaries. Prior to April 1, 2018, the Partnership may redeem all or a part of the Partnership 2014 Notes at a redemption price equal to the sum of (i) the principal amount thereof, plus (ii) a make-whole premium at the redemption date, plus accrued and unpaid interest, if any, to the redemption date. In addition, the Partnership may redeem up to 35% of the aggregate principal amount of the Partnership 2014 Notes prior to April 1, 2017 with the net proceeds of one or more equity offerings at a redemption price of 106.00% of the principal amount of the Partnership 2014 Notes, plus any accrued and unpaid interest to the date of redemption, if at least 65% of the aggregate principal amount of the Partnership 2014 Notes issued under the indenture remains outstanding after such redemption and the redemption occurs within 180 days of the date of the closing of such equity offering. On or after April 1, 2018, the Partnership may redeem all or a part of the Partnership 2014 Notes at redemption prices (expressed as percentages of principal amount) equal to 103.00% for the twelve-month period beginning on April 1, 2018, 101.500% for the twelve-month period beginning on April 1, 2019 and 100.00% for the twelve-month period beginning on April 1, 2020 and at any time thereafter, plus accrued and unpaid interest, if any, to the applicable redemption date of the Partnership 2014 Notes. 7.25% Senior Notes On December 4, 2015, we redeemed for cash the $350.0 million aggregate principal amount of 7.25% senior notes due December 2018 (the “7.25% Notes”) at a redemption price equal to 101.813% of the principal amount thereof plus accrued but unpaid interest to the redemption date for $369.2 million. Upon redemption, the 7.25% Notes were no longer deemed outstanding, interest ceased to accrue thereon and all rights of the holders of the 7.25% Notes ceased to exist. We financed the redemption of the 7.25% Notes through borrowings under our revolving credit facility. As a result of the redemption, we expensed the $6.3 million call premium and $2.9 million of unamortized deferred financing costs associated with the notes in the fourth quarter of 2015, which is reflected in debt extinguishment costs in our consolidated statements of operations. 4.25% Convertible Senior Notes In June 2009, we issued $355.0 million aggregate principal amount of 4.25% convertible senior notes due June 2014 (the “4.25% Notes”). The 4.25% Notes, after taking into consideration dividends declared, were convertible upon the occurrence of certain conditions into shares of our common stock at a conversion rate of 43.5084 shares of our common stock per $1,000 principal amount of the convertible notes, equivalent to a conversion price of approximately $22.98 per share of common stock. In June 2014, we completed our redemption of the 4.25% Notes in exchange for $370.0 million in cash and 6.8 million shares of our common stock. GAAP requires that the liability and equity components of certain convertible debt instruments that may be settled in cash upon conversion be separately accounted for in a manner that reflects an issuer’s nonconvertible debt borrowing rate. Upon issuance of our 4.25% Notes, $97.9 million was recorded as a debt discount and reflected in equity related to the convertible feature of these notes. The discount on the 4.25% Notes was amortized using the effective interest method through June 30, 2014. During the years ended December 31, 2014 and 2013, we recognized $6.9 million and $15.1 million of interest expense related to the contractual interest coupon, respectively. During the years ended December 31, 2014 and 2013, we recognized $11.3 million and $23.0 million, respectively, of interest expense related to the amortization of the debt discount. The effective interest rate on the debt component of these notes was 11.67%. In connection with the offering of the 4.25% Notes, we purchased call options on our stock at approximately $22.98 per share of common stock, after taking into consideration dividends declared, and sold warrants on our stock at approximately $32.19 per share of common stock, after taking into consideration dividends declared. These transactions economically adjust the effective conversion price to $32.19 for $325.0 million of the 4.25% Notes. In June 2014, we exercised our call options to acquire 6.5 million shares of our common stock. The cost of the common shares acquired was recorded as treasury stock in our consolidated balance sheets based on the original cost of the call options of $89.4 million. Counterparties to our warrants had the right to exercise the warrants in equal installments for 80 trading days which began in September 2014. During the year ended December 31, 2014, 1.6 million common shares were issued out of treasury stock pursuant to warrants exercised. Debt Compliance We were in compliance with our debt covenants as of December 31, 2015. If we fail to remain in compliance with our financial covenants we would be in default under our credit agreements. In addition, if we experience a material adverse effect on our assets, liabilities, financial condition, business or operations that, taken as a whole, impact our ability to perform our obligations under our debt agreements, this could lead to a default under our debt agreements. A default under one or more of our debt agreements would trigger cross-default provisions under certain of our other debt agreements, which would accelerate our obligation to repay our indebtedness under those agreements. Long-Term Debt Maturity Schedule Contractual maturities of long-term debt (excluding interest to be accrued thereon) at December 31, 2015 are as follows (in thousands):
| December 31, 2015
2016 | $ | — |
2017 | — |
2018 | 730,500 |
2019 | — |
2020 | 166,500 |
Thereafter (1) | 700,000 |
Total debt (1) | $ | 1,597,000 |
(1) | These amounts include the full face value of the Partnership 2013 Notes and the Partnership 2014 Notes and have not been reduced by the aggregate unamortized discount of $8.6 million as of December 31, 2015.

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