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Discontinued Operations and Related Assets Held for Sale (Tables) | 6 Months Ended | 12 Months Ended
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Jun. 30, 2018 | Dec. 31, 2017
Discontinued Operations and Disposal Groups [Abstract] |  |
Discontinued Operations and Related Assets Held for Sale | The following tables summarize the results of the Engineered Solutions business segment, reclassified as discontinued operations for the six months ended June 30, 2018 and 2017.
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | For the six months ended June 30, |
|  | 2018 |  | 2017 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | (Dollars in thousands) |
Net sales |  | $ | 2,468 |  | $ | 64,193 |
Cost of sales |  |  | 1,335 |  |  | 57,022 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Gross (loss) profit |  |  | 1,133 |  |  | 7,171 |
Research and development |  |  | — |  |  | 1,281 |
Selling and administrative expenses |  |  | (244 | ) |  | 7,800 |
Gain on sale of assets |  |  | — |  |  | — |
Impairments |  |  | — |  |  | 5,300 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Operating (loss) income |  |  | 1,377 |  |  | (7,210 | )
Other (income) expense |  |  | 66 |  |  | (18 | )
Interest expense |  |  | — |  |  | 1,133 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(Loss) income from discontinued operations before income taxes |  |  | 1,311 |  |  | (8,325 | )
Benefit from income taxes on discontinued operations |  |  | — |  |  | (209 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(Loss) income from discontinued operations |  | $ | 1,311 |  | $ | (8,116 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
The significant components of our Statements of Cash Flows for the Engineered Solutions business segment held for sale are as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | For the six months ended June 30, |
|  | 2018 |  | 2017 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | (Dollars in thousands) |
Depreciation and amortization |  | $ | — |  | $ | 2,311 |
Impairment |  |  | — |  |  | 5,300 |
Deferred income taxes |  |  | — |  |  | (209 | )
Capital expenditures |  |  | — |  |  | 432 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
The following table summarizes the carrying value of the assets and liabilities of discontinued operations as of June 30, 2018 and December 31, 2017.
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | As of June 30, 2018 |  | As of December 31, 2017 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | (Dollars in thousands) |
Assets of discontinued operations: |  |  |  |  |  |  |
Accounts receivable |  | $ | 1,234 |  | $ | 3,351 |
Inventories |  |  | 191 |  |  | 502 |
Prepaid expenses and other current assets |  |  | 326 |  |  | 1,137 |
Net property plant and equipment |  |  | — |  |  | 226 |
Other assets |  |  | 96 |  |  | 97 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total assets of discontinued operations |  |  | 1,847 |  |  | 5,313 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Liabilities of discontinued operations: |  |  |  |  |  |  |
Accounts payable |  | $ | 905 |  | $ | 512 |
Accrued income and other taxes |  |  | 181 |  |  | 158 |
Other accrued liabilities |  |  | 1,675 |  |  | 2,742 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total current liabilities of discontinued operations |  |  | 2,761 |  |  | 3,412 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other long-term obligations |  |  | 376 |  |  | 376 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total liabilities of discontinued operations |  | $ | 3,137 |  | $ | 3,788 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
| The following tables summarize the results of the Engineered Solutions business segment, reclassified as discontinued operations:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | For the year ended December 31, 2017 |  | For the year ended December 31, 2016 |  | For the period August 15 through December 31, 2015 |  | For the period January 1 through August 14, 2015 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | (Dollars in thousands) |
Net sales |  | $ | 82,299 |  | $ | 115,336 |  | $ | 55,608 |  | $ | 98,024 |
Cost of sales |  | 74,723 |  | 98,440 |  | 49,068 |  | 94,817 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Gross profit |  | 7,576 |  | 16,896 |  | 6,540 |  | 3,207 |
Research and development |  | 1,429 |  | 3,145 |  | 1,265 |  | 2,179 |
Selling and administrative expenses |  | 12,239 |  | 19,220 |  | 8,627 |  | 16,764 |
Gain on sale of assets |  | (6,091 | ) | — |  | — |  | — |
Rationalizations |  | (35 | ) | (405 | ) | 791 |  | 4,492 |
Impairment |  | 5,300 |  | 119,907 |  | — |  | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | (5,266 | ) | (124,971 | ) | (4,143 | ) | (20,228 | )
Other expense (income) |  | (115 | ) | (66 | ) | (135 | ) | (90 | )
Interest expense |  | 1,133 |  | 3,258 |  | 918 |  | 907 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Loss from discontinued operations before income taxes |  | (6,284 | ) | (128,163 | ) | (4,926 | ) | (21,045 | )
Benefit for income taxes on discontinued operations |  | (55 | ) | (1,189 | ) | — |  | (2,366 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Loss from discontinued operations |  | $ | (6,229 | ) | $ | (126,974 | ) | $ | (4,926 | ) | $ | (18,679 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
The significant components of our Statements of Cash Flows for discontinued operations are as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | Successor |  | Predecessor |
|  | For the year ended December 31, 2017 |  | For the year ended December 31, 2016 |  | For the period August 15 through December 31, 2015 |  | For the period January 1 through August 14, 2015 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | (Dollars in thousands) |
Depreciation and amortization |  | $ | 2,418 |  | $ | 5,277 |  | $ | 4,194 |  | $ | 7,988 |
Impairment |  | 5,300 |  | 119,907 |  | — |  | — |
(Gain) loss on sale of assets |  | (6,091 | ) | 198 |  | — |  | — |
Net change in inventory |  | 15,217 |  | (917 | ) | 3,514 |  | (2,481 | )
Cash received from divestitures |  | 27,254 |  | 15,889 |  | — |  | — |
Credit facility reductions |  | (27,254 | ) | (15,889 | ) | — |  | — |
Deferred income taxes |  | (55 | ) | (1,189 | ) | — |  | (2,366 | )
Capital expenditures |  | 558 |  | 4,713 |  | 4,447 |  | 10,104 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
The following table summarizes the carrying value of the assets and liabilities of discontinued operations as of December 31, 2017 and 2016.
​ | ​ | ​ | ​ | ​ | ​
|  | As of December 31, 2017 |  | As of December 31, 2016 |
​ | ​ | ​ | ​ | ​ | ​
|  | (Dollars in thousands) |
Assets of discontinued operations: |  |  |  |  |
Accounts receivable |  | $ | 3,351 |  | $ | 17,094 |
Inventories |  | 502 |  | 71,816 |
Prepaid expenses and other current assets |  | 1,137 |  | 320 |
Net property, plant and equipment |  | 226 |  | 79,048 |
Other assets |  | 97 |  | 12,608 |
​ | ​ | ​ | ​ | ​ | ​
Total assets of discontinued operations |  | 5,313 |  | 180,886 |
​ | ​ | ​ | ​ | ​ | ​
Impairment of assets held for sale |  | — |  | (119,907 | )
Total assets of discontinued operations |  | $ | 5,313 |  | $ | 60,979 |
​ | ​ | ​ | ​ | ​ | ​
Liabilities of discontinued operations: |  |  |  |  |
Accounts payable |  | $ | 512 |  | $ | 7,253 |
Accrued income and other taxes |  | 158 |  | 2,326 |
Other accrued liabilities |  | 2,742 |  | 10,463 |
​ | ​ | ​ | ​ | ​ | ​
Total current liabilities of discontinued operations |  | 3,412 |  | 20,042 |
​ | ​ | ​ | ​ | ​ | ​
Other long-term obligations |  | 376 |  | 850 |
Total liabilities of discontinued operations |  | $ | 3,788 |  | $ | 20,892 |
​ | ​ | ​ | ​ | ​ | ​

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- Definition Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721533-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721665-107760 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1474-107760 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721683-107760 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=84176398&loc=SL51724579-110230 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5C -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721675-107760 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 4A -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721663-107760 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84176398&loc=d3e2941-110230 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721659-107760 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5A -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721671-107760 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5D -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721677-107760 + Details
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