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Shareholders' Equity - Noncontrolling Interest Activity in Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Class of Stock [Line Items]
Income (loss) allocated to noncontrolling interest	$ (30)	$ (761)	$ (331)	$ 3,075
Consolidated Subsidiaries With Noncontrolling Interest
Class of Stock [Line Items]
Income (loss) allocated to noncontrolling interest	1	(145)	39	(220)
Series C Convertible Units
Class of Stock [Line Items]
Income (loss) allocated to noncontrolling interest	0	0	0	3,027
Class A Units
Class of Stock [Line Items]
Income (loss) allocated to noncontrolling interest	(31)	(616)	(370)	134
Series D Convertible Units
Class of Stock [Line Items]
Income (loss) allocated to noncontrolling interest	$ 0	$ 0	$ 0	$ 134

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Amount of Net Income (Loss) attributable to noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4J
-URI http://asc.fasb.org/extlink&oid=65897068&loc=SL4591551-111686

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=64809438&loc=SL4573702-111684

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