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Significant Accounting Policies (Details) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Dec. 31, 2016
Significant Accounting Policies [Line Items] |  |  |  |  |
Option to purchase noncontrolling interest impairment charge | $ 0 | $ 0 | $ 0 | $ 0 |
Beginning Balance |  |  | 60,180,000 |  |
Redemptions | (11,947,000) | $ (19,174,000) | (11,947,000) | (19,174,000) |
Granted |  |  | (9,295,000) |  |
Ending Balance | 62,955,000 |  | 62,955,000 |  | $ 60,180,000
Redeemable Noncontrolling Interest [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Beginning Balance |  |  | 60,180,000 | $ 69,471,000 | 69,471,000
Redemptions |  |  | (269,000) |  | (1,708,000)
Granted |  |  | 0 |  | 2,274,000
Changes in redemption value |  |  | 2,783,000 |  | (9,604,000)
Currency Translation Adjustments |  |  | 261,000 |  | (253,000)
Ending Balance | $ 62,955,000 |  | $ 62,955,000 |  | $ 60,180,000

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- Definition Adjustments to redeemable noncontrolling interest resulting from foreign currency translation adjustments. + References No definition available. + Details
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- Definition Change in noncontrolling interest during the period as a result of a change in the redemption value of redeemable noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 15 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 16(c) -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 14 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 + Details
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