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No definition available.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of assets acquired at the acquisition date.

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Amount of liabilities assumed at the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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- Definition

Future cash outflow to pay for purchases of fixed assets that have occurred.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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The amount of cash paid for interest during the period.

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Amount of asset retirement obligations settled through noncash transactions. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset.

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DISCLOSURE OF SUPPLEMENTAL CASH FLOW INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	May 31, 2012	Jun. 17, 2014
Income taxes and interest paid:
Income taxes paid, net of receipts	$ 22,754us-gaap_IncomeTaxesPaidNet	$ 16,226us-gaap_IncomeTaxesPaidNet	$ 17,676us-gaap_IncomeTaxesPaidNet
Interest paid	9,298us-gaap_InterestPaid	703us-gaap_InterestPaid	791us-gaap_InterestPaid
Non-cash investing and financing activities:
Closure/Post-closure retirement asset	7,157	886	921
Capital expenditures in accounts payable	6,101	1,561	762
Restricted stock issued from treasury shares	487	864	372
DISCLOSURE OF SUPPLEMENTAL CASH FLOW INFORMATION
Goodwill	217,172us-gaap_Goodwill	21,693us-gaap_Goodwill	23,105us-gaap_Goodwill
Dynecol
DISCLOSURE OF SUPPLEMENTAL CASH FLOW INFORMATION
Assets acquired				10,706
Liabilities assumed				(1,268)
Total identifiable net assets				9,438
Goodwill				1,327
Total purchase price				10,765
EQ
DISCLOSURE OF SUPPLEMENTAL CASH FLOW INFORMATION
Assets acquired					466,399
Liabilities assumed					(196,916)
Total identifiable net assets	269,483				269,483
Goodwill	197,163				197,163
Total purchase price	$ 466,646				$ 466,646