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FAIR VALUE MEASUREMENTS: (Tables)

6 Months Ended

Jun. 30, 2014

Schedule of financial assets and liabilities accounted for at fair value on a recurring basis

	June 30, 2014		December 31, 2013		Input Hierarchy Level
Assets:
Available-for-sale securities	$	7,197	$	14,174	Level 1
Liabilities:
Asset retirement obligation	$	491,142	$	479,488	Level 3

Schedule of fair value reconciliation of level 3 liabilities measured at fair value

	Asset Retirement Obligation
	2014		2013
Balance January 1	$	479,488	$	456,823
Accretion expense	5,760		5,488
Balance March 31	485,248		462,311
Accretion expense	5,894		5,615
Balance June 30	$	491,142	$	467,926

- Definition

Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability.

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