XML 22 R11.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Goodwill | 6 Months Ended
--- | ---
Jul. 01, 2017
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 31, 2016 |  |  |  |
Goodwill | $ | 813,621 |  | $ | 317,008 |  | $ | 111,178 |  | $ | 1,241,807 |
Accumulated impairment losses | (15,914 | ) | — |  | — |  | (15,914 | )
| 797,707 |  | 317,008 |  | 111,178 |  | 1,225,893 |
Goodwill acquired during year | 2,197 |  | — |  | — |  | 2,197 |
Foreign currency translation | 19,980 |  | 16,236 |  | 7,621 |  | 43,837 |
Balance at July 1, 2017 |  |  |  |  |  |  |
Goodwill | 835,798 |  | 333,244 |  | 118,799 |  | 1,287,841 |
Accumulated impairment losses | (15,914 | ) | — |  | — |  | (15,914 | )
| $ | 819,884 |  | $ | 333,244 |  | $ | 118,799 |  | $ | 1,271,927 |

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