Property and Equipment | PROPERTY AND EQUIPMENT A summary of property and equipment by classification is as follows: (In thousands) June 30, September 30, Drilling vessels and equipment $ 4,032,126 $ 4,181,774 Construction work in progress 684,522 319,548 Drill pipe 42,734 31,265 Office equipment and other 36,378 35,566 Total cost 4,795,760 4,568,153 Less: Accumulated depreciation (606,966 ) (601,125 ) Property and equipment, net $ 4,188,794 $ 3,967,028 Asset Impairment The Atwood Hunter completed the contract it was working under in December 2014. Based on the lack of contracting opportunities and the further deterioration of commodity prices, in January 2015 we determined that it was not likely that additional work would be obtained in the foreseeable future. Therefore we made the decision to scrap the rig and the Atwood Hunter and its materials and supplies were written down to their salvage value. We recorded a non-cash impairment charge of approximately $60.8 million ( $56.1 million , net of tax, or $0.86 per diluted share), which is included in Asset Impairment on the Condensed Consolidated Statement of Operations for the nine months ended June 30, 2015 . This impairment charge includes write-downs of property and equipment of $48.0 million and write-downs of our inventory of materials and supplies that was specific to the Atwood Hunter of $8.4 million . Sale of Assets During February 2015, we entered into an agreement for the sale and recycling of the Atwood Hunter for a sale price of approximately $2.9 million . Upon the agreement becoming effective, we received $1.8 million as a deposit. We anticipate the closing to occur in the quarter ending September 30, 2015. We recorded a loss of approximately $5.5 million ( $5.5 million , net of tax, or $0.08 per diluted share), which is included in (Gain) Loss on Sale of Assets on the Condensed Consolidated Statement of Operations for the nine months ended June 30, 2015 . During December 2014, we completed the sale of our rig, the Atwood Southern Cross , for recycling. We received $2.1 million in proceeds and incurred related costs of $2.0 million . We recorded a loss of approximately $8.0 million ( $7.1 million , net of tax, or $0.11 per diluted share), which is included in (Gain) Loss on Sale of Assets on the Condensed Consolidated Statement of Operations for the nine months ended June 30, 2015 . Construction Projects As of June 30, 2015 , we had expended approximately $657 million towards our two ultra-deepwater drillships under construction at the Daewoo Shipbuilding and Marine Engineering Co., Ltd. ("DSME") yard in South Korea. Remaining firm commitments for these two drillships under construction totaled approximately $504 million at June 30, 2015 . On October 31, 2014, we entered into Supplemental Agreements (collectively, "Supplemental Agreement No. 1") to the construction contracts for our two ultra-deepwater drillships which postponed their delivery by six months each. The Atwood Admiral was rescheduled for delivery on September 30, 2015 and the Atwood Archer was rescheduled for delivery on June 30, 2016. In consideration of the agreement by DSME to postpone deliveries, we agreed to accelerate the payment of a portion of the milestone payments on each rig as follows: $50 million on each rig was paid on November 30, 2014 and $25 million on each rig was paid on June 30, 2015. In addition, each rig’s final milestone payment amount will be increased by the aggregate financing cost on these payments using an interest rate of 3.5% per annum. On February 6, 2015, we entered into additional Supplemental Agreements (collectively, “Supplemental Agreement No. 2”), which amended Supplemental Agreement No. 1 and gave us the option to postpone the delivery of each of these two drillships by two further periods of six months each (for a total potential extension of 12 months). In consideration, we agreed to accelerate the payment of a portion of the remaining milestone payments on both drillships whenever an option to further postpone delivery is exercised as follows: for the Atwood Admiral , $152 million (including the aggregate financing cost accrued to date from Supplemental Agreement No. 1) on the completion of the drillship, which is currently projected to be on or around September 30, 2015 and $146 million payable upon delivery of the drillship, which is currently projected to be on or around on March 31, 2016; for the Atwood Archer , $153 million (including the aggregate financing costs accrued to date from Supplemental Agreement No. 1) on the completion of the drillship, which is currently projected to be on or around June 30, 2016, and $205 million payable upon delivery of the drillship, which is currently projected to be on or around December 31, 2016. On March 30, 2015, we exercised our first six-month option ("Option No. 1") to delay the delivery of the Atwood Admiral to March 31, 2016. If we elect to exercise the first six month option for on the Atwood Archer, and/or the second six-month option on either of the two rigs (“Option No. 2”), milestone payments will also be further accelerated. Additionally, any of the extensions of the delivery dates will cause us to incur additional operating costs. On May 18, 2015, we entered into additional Supplemental Agreements (collectively, "Supplemental Agreement No. 3"), which create an option for us to revise the milestone payment due dates for both the Atwood Admiral and Atwood Archer . The upcoming installment payments of $150 million for both rigs, which were initially due on September 30, 2015 for the Atwood Admiral per its Supplemental Agreement No. 2, and June 30, 2016 for the Atwood Archer, may be accelerated at our sole option. We entered into Supplemental Agreement No. 3 in consideration of keeping vessels dockside, which lowers our future operating costs. We exercised the option under Supplemental Agreement No. 3 for the Atwood Admiral, and paid the $150 million installment on May 31, 2015. The option for the Atwood Archer must be exercised by December 31, 2015. The expected delivery dates of the Atwood Admiral and Atwood Archer are as follows: Atwood Admiral Atwood Archer Expected Delivery Status Expected Delivery Status Prior to supplemental agreements 3/31/2015 12/31/2015 Supplemental Agreement No. 1: 9/30/2015 Exercised 6/30/2016 Exercised Supplemental Agreement No. 2: Option No. 1 3/31/2016 Exercised 12/31/2016 Unexercised Option No. 2 9/30/2016 Unexercised 6/30/2017 Unexercised As of June 30, 2015 , expected payments for the Atwood Admiral and Atwood Archer are as follows: (In millions) Date Atwood Admiral Atwood Archer Final payment 3/31/2016 $ 146 Final payment 6/30/2016 $ 358 Total $ 146 $ 358 |