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ASSET RETIREMENT OBLIGATIONS AND RESTRICTED CASH (Tables)

6 Months Ended

Jun. 30, 2016

Schedule of Change in Asset Retirement Obligation [Table Text Block]

		June 30,			December 31,
		2016			2015
Asset retirement obligation, beginning of period	$	8,573		$	5,683
Revision of estimate		-			877
Aquried in asset acquisitions or business combinations		5,454			2,145
Accretion of liabilities		351			494
Settlements		(698	)		(626	)
Asset retirement obligation, end of period	$	13,680		$	8,573
Asset retirement obligation:
Current	$	305		$	1,000
Non-current		13,375			7,573
Asset retirement obligation, end of period	$	13,680		$	8,573

Schedule of Restricted Cash and Cash Equivalents [Table Text Block]

		June 30,			December 31,
		2016			2015
Restricted cash, beginning of period	$	12,980		$	16,148
Restricted cash from acquisitions		4,478			2,100
Refunds of collateral		-			(5,268	)
Collateral posted		2,153			-
Restricted cash, end of period	$	19,611		$	12,980

X

- Definition

Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859

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X

- Definition

Tabular disclosure of the cash and cash items which are restricted as to withdrawal or usage. The provisions of any restrictions are described in a note to the financial statements. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash Equivalents
-URI http://asc.fasb.org/extlink&oid=6507016

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