RESTRICTED CASH (Narrative) (Details) | 3 Months Ended | 15 Months Ended |
Dec. 31, 2015USD ($)$ / shares | Jun. 30, 2015USD ($)$ / shares | Dec. 31, 2014USD ($)$ / shares | Dec. 31, 2015$ / shares |
Restricted Cash and Cash Equivalents Items [Line Items] | | | | |
Investment in deposit | $ 61,412 | | $ 36,031 | |
November 22, 2014 Certificate of Deposit [Member] | | | | |
Restricted Cash and Cash Equivalents Items [Line Items] | | | | |
Investment in deposit | | | $ 25,125 | |
Deposit investment term (in Duration) | | | 12 months | |
Deposit investment, maturity date (in Date) | | | Nov. 22, 2015 | |
Deposit investment, interest rate (in Percent) | | | 0.30% | |
Short-term deposit investment, interest earned | | | $ 32 | |
Short-term deposit investment, amount of EPA letter secured by restricted deposit investment | | | $ 23,595 | |
Number of wells covered under EPA Letter Certificate of Deposit | $ / shares | | | 1 | |
November 22, 2015 Certificate of Deposit [Member] | | | | |
Restricted Cash and Cash Equivalents Items [Line Items] | | | | |
Investment in deposit | $ 25,201 | | | |
Deposit investment term (in Duration) | 12 months | | | |
Deposit investment, maturity date (in Date) | Nov. 22, 2016 | | | |
Deposit investment, interest rate (in Percent) | 0.30% | | | |
Short-term deposit investment, interest earned | $ 19 | | | |
Short-term deposit investment, amount of EPA letter secured by restricted deposit investment | $ 23,595 | | | |
Number of wells covered under EPA Letter Certificate of Deposit | $ / shares | 1 | | | |
December 2, 2014 Certificate of Deposit [Member] | | | | |
Restricted Cash and Cash Equivalents Items [Line Items] | | | | |
Investment in deposit | | | $ 18,000 | |
Deposit investment term (in Duration) | | | 12 months | |
Deposit investment, maturity date (in Date) | | | Nov. 22, 2015 | |
Deposit investment, interest rate (in Percent) | | | 0.30% | |
Short-term deposit investment, amount of EPA letter secured by restricted deposit investment | | | $ 18,000 | |
December 2, 2014 Certificate of Deposit 2 [Member] | | | | |
Restricted Cash and Cash Equivalents Items [Line Items] | | | | |
Investment in deposit | | | $ 18,000 | |
Deposit investment term (in Duration) | | | 12 months | |
Deposit investment, maturity date (in Date) | | | Nov. 22, 2015 | |
Deposit investment, interest rate (in Percent) | | | 0.30% | |
Short-term deposit investment, amount of EPA letter secured by restricted deposit investment | | | $ 18,000 | |
December 2, 2015 Certificate of Deposit [Member] | | | | |
Restricted Cash and Cash Equivalents Items [Line Items] | | | | |
Investment in deposit | $ 18,054 | | | |
Deposit investment term (in Duration) | 12 months | | | |
Deposit investment, maturity date (in Date) | Dec. 2, 2016 | | | |
Deposit investment, interest rate (in Percent) | 0.30% | | | |
Short-term deposit investment, amount of EPA letter secured by restricted deposit investment | $ 18,000 | | | |
December 2, 2015 Certificate of Deposit 2 [Member] | | | | |
Restricted Cash and Cash Equivalents Items [Line Items] | | | | |
Investment in deposit | $ 18,054 | | | |
Deposit investment term (in Duration) | 12 months | | | |
Deposit investment, maturity date (in Date) | Dec. 2, 2016 | | | |
Deposit investment, interest rate (in Percent) | 0.30% | | | |
Short-term deposit investment, amount of EPA letter secured by restricted deposit investment | $ 18,000 | | | |
Combined December 2 Certificates of Deposit [Member] | | | | |
Restricted Cash and Cash Equivalents Items [Line Items] | | | | |
Number of certificates of deposit invested in (in Integer) | $ / shares | | | | 2 |
Number of EPA letters secured (in Integer) | $ / shares | | | | 2 |
Number of wells covered under EPA Letter Certificate of Deposit | $ / shares | | | | 2 |
April 20, 2015 Certificate of Deposit [Member] | | | | |
Restricted Cash and Cash Equivalents Items [Line Items] | | | | |
Investment in deposit | | $ 68,000 | | |
Deposit investment term (in Duration) | | 36 months | | |
Deposit investment, maturity date (in Date) | | Apr. 20, 2018 | | |
Deposit investment, interest rate (in Percent) | | 0.60% | | |
Short-term deposit investment, interest earned | | $ 103 | $ 0 | |
Short-term deposit investment, amount of EPA letter secured by restricted deposit investment | | $ 68,000 | | |
Number of wells covered under EPA Letter Certificate of Deposit | $ / shares | | 4 | | |