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Other Asset Impairments Other Asset Impairments (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Asset Impairment Charges [Abstract]
Impairment charges and other	$ (600)	$ 1,300	$ 9,800	$ 0	$ 10,480	$ 3,687
Texas Sales and Use Tax Assessment Settlement Amount	$ 200				200
Proceeds from sale of aircraft				$ 0	$ 12,159	$ 0

X

- Definition

Amount of agreed upon settlement on the Texas sales and use tax assessment between the Company and the State of Texas

+ References

No definition available.

+ Details

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Balance Type:	debit
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X

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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Balance Type:	debit
Period Type:	duration

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- References

No definition available.

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Namespace Prefix:	us-gaap_
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Balance Type:	na
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X

- Definition

Amount of cash inflow from the sale of other assets recognized in investing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585

+ Details

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