Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Stockholders' Equity [Abstract]
Net income related to redeemable noncontrolling interests	$ 2,415	$ 958	$ 1,210
Mandatorily redeemable noncontrolling interests	1,613	1,447	1,625
Mandatorily redeemable noncontrolling interests OCI	$ 70	$ (440)	$ (469)

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.19)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration