XML 72 R35.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Goodwill (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2013
Goodwill [Abstract] |
Schedule of Goodwill [Table Text Block] | A summary of our goodwill accounts is as follows (in thousands):
Balance, | December 31, 2010 |  | $ | 7,499 |
Goodwill impairment |  | — |
Balance, | December 31, 2011 |  | 7,499 |
Goodwill impairment |  | — |
Goodwill acquired through the business combinations of Nettleton and Big Sandy |  | 2,955 |
Balance, | December 31, 2012 |  | 10,454 |
Goodwill impairment |  | — |
Balance, | December 31, 2013 |  | $ | 10,454 |

X
- Details
Name: | dk_GoodwillAbstract
Namespace Prefix: | dk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13854-109267 + Details
Name: | us-gaap_ScheduleOfGoodwillTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration