Condensed Consolidating Guarantor Financial Statements Details IS Summary (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Net income	$ 13,174	$ 16,788
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	10,685	9,789
Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		16,788
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		12,239
Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(2,450)
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net income	11,942	13,525
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	11,942	13,525
Guarantor Subsidiaries \| Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		12,522
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		12,522
Guarantor Subsidiaries \| Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		0
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net income	10,229	10,355
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	10,229	10,355
Non-Guarantor Subsidiaries \| Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		11,358
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		6,809
Non-Guarantor Subsidiaries \| Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		4,549
Consolidating Eliminations
Condensed Financial Statements, Captions [Line Items]
Net income	(22,171)	(23,880)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(22,171)	(23,880)
Consolidating Eliminations \| Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		0
Consolidating Eliminations \| Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		0
Parent Company
Condensed Financial Statements, Captions [Line Items]
Net income	13,174	16,788
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 10,685	9,789
Parent Company \| Scenario, Previously Reported [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		(7,092)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(7,092)
Parent Company \| Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(6,999)
Adjustments for New Accounting Pronouncement [Member] \| Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		0
Adjustments for New Accounting Pronouncement [Member] \| Guarantor Subsidiaries \| Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		1,003
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		1,003
Adjustments for New Accounting Pronouncement [Member] \| Non-Guarantor Subsidiaries \| Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		(1,003)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(1,003)
Adjustments for New Accounting Pronouncement [Member] \| Consolidating Eliminations \| Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		(23,880)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(23,880)
Adjustments for New Accounting Pronouncement [Member] \| Parent Company \| Scenario, Adjustment [Member]
Condensed Financial Statements, Captions [Line Items]
Net income		23,880
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		$ 23,880