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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jan. 03, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Cash Paid For: |  |  |  |
Interest |  | $ 43,093 | $ 38,450 | $ 31,692
Income taxes |  |  | 34 | 210
Non-Cash Activity: |  |  |  |
Accounts payable for purchase of property, plant and equipment |  | 14,504 | 14,585 | 15,636
Assets acquired by finance lease |  |  | 835 |
Market value of common units issued under deferred compensation plans before tax withholding requirements |  | 17,415 | $ 6,142 | $ 8,149
Acquisition of businesses |  |  |  |
Fair value of assets assumed |  | 629,475 |  |
Previously held equity-method investments |  | (307,322) |  |
Cash paid, net of cash acquired |  | (320,232) |  |
Fair value of liabilities assumed |  | 1,921 |  |
Acquisition gain |  | $ 177,043 |  |
AllDale I and II |  |  |  |
Acquisition of businesses |  |  |  |
Previously held equity-method investments | $ (307,322) |  |  |
Acquisition gain | $ 177,000 |  |  |

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- Definition Future cash outflow to pay for purchases of fixed assets that have occurred. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 + Details
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- Definition The fair value of assets acquired in noncash investing or financing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 + Details
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