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Adoption of ASC 606 - Summary of Impact of Adoption of Accounting Standards (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Net sales | $ 79,781 | $ 92,390 | $ 283,430 | $ 338,587
Cost of sales | 89,523 | 99,675 | 280,006 | 322,917
Gross profit (loss) | (9,742) | (7,285) | 3,424 | 15,670
Selling, general and administrative expense | 9,080 | 7,975 | 25,780 | 26,752
Operating loss | (16,557) | $ (15,363) | (20,542) | $ (13,340)
Accounting Standards Update 2014-09 [Member] |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Net sales | 79,781 |  | 283,430 |
Cost of sales | 89,523 |  | 280,006 |
Gross profit (loss) | (9,742) |  | 3,424 |
Selling, general and administrative expense | 9,080 |  | 25,780 |
Operating loss | (16,557) |  | (20,542) |
Accounting Standards Update 2014-09 [Member] | Balances without adoption of 606 [Member] |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Net sales | 95,560 |  | 332,602 |
Cost of sales | 105,157 |  | 328,727 |
Gross profit (loss) | (9,597) |  | 3,875 |
Selling, general and administrative expense | 9,225 |  | 26,231 |
Operating loss | (16,557) |  | (20,542) |
Accounting Standards Update 2014-09 [Member] | Effect of Change Higher/(Lower) [Member] |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |
Net sales | (15,779) |  | (49,172) |
Cost of sales | (15,634) |  | (48,721) |
Gross profit (loss) | (145) |  | (451) |
Selling, general and administrative expense | $ (145) |  | $ (451) |

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- Definition The aggregate cost of goods produced and sold and services rendered during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1,2) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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