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Condensed Consolidating Guarantor Financial Statements - Details IS Summary (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	$ (1,412)	$ 11,173	$ 23,435	$ 41,300
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(15,413)	(10,363)	(7,269)	6,108
Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Net income (loss)		11,173		41,300
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(2,825)		18,426
Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(7,538)		(12,318)
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	5,388	5,628	26,257	29,463
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	3,635	5,628	24,504	29,463
Guarantor Subsidiaries | Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Net income (loss)		4,531		26,590
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		4,531		26,590
Guarantor Subsidiaries | Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		0		0
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	12,289	12,086	33,701	32,939
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	12,289	12,086	33,701	32,939
Non-Guarantor Subsidiaries | Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Net income (loss)		13,183		35,812
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(815)		12,938
Non-Guarantor Subsidiaries | Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		13,998		22,874
Parent Company
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	(1,412)	11,173	23,435	41,300
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(13,660)	(10,363)	(5,516)	6,108
Parent Company | Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Net income (loss)		(6,541)		(21,102)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(6,541)		(21,102)
Parent Company | Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(21,536)		(35,192)
Adjustments for New Accounting Pronouncement [Member] | Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Net income (loss)		0		0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		0		0
Adjustments for New Accounting Pronouncement [Member] | Guarantor Subsidiaries | Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Net income (loss)		1,097		2,873
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		1,097		2,873
Adjustments for New Accounting Pronouncement [Member] | Non-Guarantor Subsidiaries | Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Net income (loss)		(1,097)		(2,873)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(1,097)		(2,873)
Adjustments for New Accounting Pronouncement [Member] | Parent Company | Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Net income (loss)		17,714		62,402
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		17,714		62,402
Consolidating Eliminations
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	(17,677)	(17,714)	(59,958)	(62,402)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ (17,677)	(17,714)	$ (59,958)	(62,402)
Consolidating Eliminations | Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Net income (loss)		0		0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		0		0
Consolidating Eliminations | Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		0		0
Consolidating Eliminations | Adjustments for New Accounting Pronouncement [Member] | Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Net income (loss)		(17,714)		(62,402)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		$ (17,714)		$ (62,402)

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Other Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=51831270

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=51831223

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e557-108580

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Net Income
-URI http://asc.fasb.org/extlink&oid=51831255

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Net Income
-URI http://asc.fasb.org/extlink&oid=51831255

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

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

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-Name Accounting Standards Codification
-Topic 944
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-Section S99
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-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Other Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=51831270

Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 225
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-Section S99
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