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Redeemable Non-Controlling Interest (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) Partnership	Dec. 31, 2014 USD ($) Partnership
Redeemable Non-Controlling Interest [Abstract]
Beginning balance	$ 7,376	$ 4,104
Operating results allocated to redeemable non-controlling interest partners	666	396
Distributions to redeemable non-controlling interest partners	(909)	(453)
Reclass of non-controlling interests	2,681	6,375
Increase due to revaluation fair value of redeemable non-controlling interest	529	1,841
Payments for purchase of redeemable non-controlling interests	(1,500)	(4,887)
Ending balance	$ 8,843	$ 7,376
Business Acquisition [Line Items]
Number of separate transactions to purchase partnership interest | Partnership		4
Number of partnership in which interest acquired | Partnership	8	4
Purchase price for additional non controlling interest in cash	$ 1,500
Purchase price for additional non controlling interest	8,700	$ 600
Undistributed earnings		100
Remaining purchase price	8,400	500
Future tax benefits	$ 3,300	$ 200
Minimum [Member]
Business Acquisition [Line Items]
Percentage of interest acquired	5.00%	1.00%
Maximum [Member]
Business Acquisition [Line Items]
Percentage of interest acquired	35.00%	35.00%

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Represents the purchase by the parent of an additional equity interest in a subsidiary during the period, thereby effecting a change in total (consolidated) equity attributable to the parent. The purchase of the additional equity interest represented by this element increases the parent's controlling interest in the subsidiary.

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Amount after tax of income (loss) attributable to other redeemable noncontrolling equity holder.

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Amount of increase in noncontrolling interest from sale of a portion of the parent's controlling interest.

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The cash outflow during the period for redemption of redeemable noncontrolling interests.

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Amount of cash outflow to a noncontrolling interest. Includes, but not limited to, reduction of noncontrolling interest ownership. Excludes dividends paid to the noncontrolling interest.

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As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

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Represents the purchase in cash by the parent of an additional equity interest in a subsidiary during the period, thereby effecting a change in total (consolidated) equity attributable to the parent. The purchase of the additional equity interest represented by this element increases the parent's controlling interest in the subsidiary.

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Refers to the amount of increase due to revaluation fair value of redeemable non-controlling interest from sale of a portion of the parent's controlling interest.

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Number of partnership in which interest acquired during the period.

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Number of separate transactions to purchase partnership interest during the period.

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