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Condensed Consolidating Guarantor Financial Statements Details IS Summary (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Condensed Financial Statements, Captions [Line Items]
Net income	$ 11,673	$ 13,339	$ 24,847	$ 30,127
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(2,541)	6,682	8,144	16,471
Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		13,339		30,127
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		9,012		21,251
Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(2,330)		(4,780)
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net income	8,927	10,310	20,869	23,835
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	8,927	10,310	20,869	23,835
Guarantor Subsidiaries | Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		9,537		22,059
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		9,537		22,059
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	11,183	10,498	21,412	20,853
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	11,183	10,498	21,412	20,853
Non-Guarantor Subsidiaries | Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		11,271		22,629
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		6,944		13,753
Non-Guarantor Subsidiaries | Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		4,327		8,876
Parent Company
Condensed Financial Statements, Captions [Line Items]
Net income	11,673	13,339	24,847	30,127
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(2,541)	6,682	8,144	16,471
Parent Company | Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		(7,469)		(14,561)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(7,469)		(14,561)
Parent Company | Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(6,657)		(13,656)
Adjustments for New Accounting Pronouncement [Member] | Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		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		773		1,776
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		773		1,776
Adjustments for New Accounting Pronouncement [Member] | Non-Guarantor Subsidiaries | Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		(773)		(1,776)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(773)		(1,776)
Adjustments for New Accounting Pronouncement [Member] | Parent Company | Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		20,808		44,688
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		20,808		44,688
Consolidating Eliminations
Condensed Financial Statements, Captions [Line Items]
Net income	(20,110)	(20,808)	(42,281)	(44,688)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ (20,110)	(20,808)	$ (42,281)	(44,688)
Consolidating Eliminations | Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		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		(20,808)		(44,688)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		$ (20,808)		$ (44,688)

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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=36458714&loc=d3e557-108580

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=51831255

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No definition available.

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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
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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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-Name Accounting Standards Codification
-Topic 944
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-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
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-Name Accounting Standards Codification
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Glossary Other Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=51831270

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
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-Section 03
-Paragraph 19
-Article 5

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