Number of persons employed by the Entity

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Number of consolidated subsidiaries reported by the Company.

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- Definition

Amount for accounts payable to related parties.

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For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

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For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

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Carrying amount as of the balance sheet date of expenditures made in advance of when the economic benefit of the cost will be realized, and which will be expensed in future periods with the passage of time or when a triggering event occurs.

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- Definition

The cash inflow from sale of machinery and equipment.

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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Reflects the sum of all other revenue and income realized from sales and other transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party during the period.

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No definition available.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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Related Party Transactions (Other Related Party Transactions) (Narrative) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($) employee	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) employee	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Management [Member] \| Subcontracting Arrangement, Construction Services [Member]
Related Party Transaction [Line Items]
Number of additional management employees, subcontracting arrangement \| employee	2		2
Expenses from transactions with related party	$ 5,600,000		$ 8,800,000
Payables, related party	$ 3,200,000		3,200,000
Management [Member] \| Subcontracting Arrangement, Construction Services [Member] \| Subsidiaries [Member]
Related Party Transaction [Line Items]
Number of subsidiaries	1
Management [Member] \| Equipment [Member]
Related Party Transaction [Line Items]
Proceeds from sale of equipment	$ 300,000
Management [Member] \| Service Agreements [Member]
Related Party Transaction [Line Items]
Expenses from transactions with related party	7,400,000	$ 3,100,000	14,200,000	$ 4,500,000
Payables, related party	6,000,000		6,000,000		$ 2,100,000
Management [Member] \| Lease Agreements [Member]
Related Party Transaction [Line Items]
Expenses from transactions with related party	12,500,000	5,100,000	31,600,000	14,500,000
Payables, related party	100,000		100,000		100,000
Prepaid amounts, related party	400,000		400,000
Executive Officers [Member] \| Employee Leasing Arrangements [Member] \| Related Customer [Member]
Related Party Transaction [Line Items]
Charges, related party	200,000	200,000	600,000	600,000
Receivables, related party	200,000		200,000		100,000
Executive Officers [Member] \| Service Agreements [Member] \| Related Customer [Member]
Related Party Transaction [Line Items]
Revenue, related party	200,000	$ 200,000	700,000	$ 700,000
Accounts receivable, related party	300,000		300,000		$ 300,000
Chairman, Board of Directors [Member] \| Lease Agreements [Member] \| Aircraft [Member]
Related Party Transaction [Line Items]
Expenses from transactions with related party	700,000		2,000,000
Payables, related party	$ 0		$ 0