XML 25 R12.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Goodwill | 3 Months Ended
--- | ---
Mar. 31, 2018
Intangible Asset Disclosure Text Block [Abstract] |
Goodwill | Goodwill Changes in the carrying amount of goodwill (in thousands):
| Feed Ingredients | Food Ingredients | Fuel Ingredients | Total
Balance at December 30, 2017 |  |  |  |
Goodwill | $ | 848,167 |  | $ | 344,471 |  | $ | 124,369 |  | $ | 1,317,007 |
Accumulated impairment losses | (15,914 | ) | — |  | — |  | (15,914 | )
| 832,253 |  | 344,471 |  | 124,369 |  | 1,301,093 |
Goodwill acquired during year | — |  | — |  | — |  | — |
Foreign currency translation | 201 |  | 6,560 |  | 1,754 |  | 8,515 |
Balance at March 31, 2018 |  |  |  |  |  |  |
Goodwill | 848,368 |  | 351,031 |  | 126,123 |  | 1,325,522 |
Accumulated impairment losses | (15,914 | ) | — |  | — |  | (15,914 | )
| $ | 832,454 |  | $ | 351,031 |  | $ | 126,123 |  | $ | 1,309,608 |

X
- Definition Intangible Asset Disclosure Text Block [Abstract] + References No definition available. + Details
Name: | dar_IntangibleAssetDisclosureTextBlockAbstract
Namespace Prefix: | dar_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2144439 + Details
Name: | us-gaap_GoodwillDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration