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Fair Value Measurements
6 Months Ended
Jun. 30, 2014
Fair Value Disclosure [Abstract]  
Fair Value Disclosures [Text Block]

7.  FAIR VALUE MEASUREMENTS:

As required by FASB ASC 820, the Company defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date and establishes a three level hierarchy for measuring fair value. Fair value measurements are classified and disclosed in one of the following categories:

Level 1: Quoted prices (unadjusted) in active markets for identical assets and liabilities that the Company has the ability to access at the measurement date.

Level 2: Inputs other than quoted prices included within Level 1 that are either directly or indirectly observable for the asset or liability, including quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in inactive markets, inputs other than quoted prices that are observable for the asset or liability, and inputs that are derived from observable market data by correlation or other means. Instruments categorized in Level 2 include non-exchange traded derivatives such as over-the-counter forwards and swaps.

Level 3: Unobservable inputs for the asset or liability, including situations where there is little, if any, market activity for the asset or liability.

The valuation assumptions utilized to measure the fair value of the Company’s commodity derivatives were observable inputs based on market data obtained from independent sources and are considered Level 2 inputs (quoted prices for similar assets, liabilities (adjusted) and market-corroborated inputs).

The following table presents for each hierarchy level the Company’s assets and liabilities, including both current and non-current portions, measured at fair value on a recurring basis, as of June 30, 2014. The Company has no derivative instruments which qualify for cash flow hedge accounting.

Level 1Level 2Level 3Total
Liabilities:
Current derivative liability$-$ 40,007 $-$ 40,007

In consideration of counterparty credit risk, the Company assessed the possibility of whether each counterparty to the derivative would default by failing to make any contractually required payments as scheduled in the derivative instrument in determining the fair value. Additionally, the Company considers that it is of substantial credit quality and has the financial resources and willingness to meet its potential repayment obligations associated with the derivative transactions.

Fair Value of Financial Instruments

The estimated fair value of financial instruments is the estimated amount at which the instrument could be exchanged currently between willing parties. The carrying amounts reported in the Consolidated Balance Sheets for cash and cash equivalents, accounts receivable, and accounts payable approximate fair value due to the immediate or short-term maturity of these financial instruments. The Company uses available market data and valuation methodologies to estimate the fair value of its debt. The valuation assumptions utilized to measure the fair value of the Company’s debt are considered Level 2 inputs. This disclosure is presented in accordance with FASB ASC Topic 825, Financial Instruments, and does not impact the Company’s financial position, results of operations or cash flows.

June 30, 2014December 31, 2013
CarryingEstimatedCarryingEstimated
AmountFair ValueAmountFair Value
5.45% Notes due March 2015, issued 2008$ 100,000 $ 103,950 $ 100,000 $ 105,913
7.31% Notes due March 2016, issued 2009 62,000 68,371 62,000 70,228
4.98% Notes due January 2017, issued 2010 116,000 123,818 116,000 126,342
5.92% Notes due March 2018, issued 2008 200,000 222,247 200,000 226,127
5.75% Notes due December 2018, issued 2013 450,000 463,634 450,000 466,946
7.77% Notes due March 2019, issued 2009 173,000 208,034 173,000 211,877
5.50% Notes due January 2020, issued 2010 207,000 226,818 207,000 229,068
4.51% Notes due October 2020, issued 2010 315,000 323,556 315,000 323,732
5.60% Notes due January 2022, issued 2010 87,000 95,464 87,000 95,736
4.66% Notes due October 2022, issued 2010 35,000 35,703 35,000 35,494
5.85% Notes due January 2025, issued 2010 90,000 99,815 90,000 99,142
4.91% Notes due October 2025, issued 2010 175,000 178,089 175,000 175,744
Credit Facility due October 2016 427,000 427,000 460,000 460,000
$ 2,437,000 $ 2,576,499 $ 2,470,000 $ 2,626,349