DEBT	3 Months Ended
Mar. 31, 2013
Debt Disclosure [Abstract]
DEBT	DEBT On February 28, 2012, we terminated our secured line of credit with UMB Bank, which was effective through August 1, 2012, and replaced it with a secured revolving credit facility with Wells Fargo Bank. The Credit Agreement was effective February 28, 2012 and has a maturity date of February 28, 2016. The amount we may borrow under the Credit Agreement is the lesser of the borrowing base calculation and $10,000, and, so long as no default has occurred, we may increase the maximum availability to $20,000 in $2,500 increments. As of March 31, 2013, we had no outstanding borrowings on our credit facility and available capacity was $9,900, net of $100 of letters of credit backed by the facility. Under the Credit Agreement, we are subject to certain standard affirmative and negative covenants, including the following financial covenants: 1) maintaining a minimum adjusted EBITDA, as defined in the Credit Agreement, of no less than the monthly minimum amounts set forth in an amendment to the Credit Agreement and 2) limiting non-financed capital expenditures to no more than the monthly maximum amounts set forth in an amendment to the Credit Agreement. We were in compliance with all such covenants as of March 31, 2013. On February 25, 2013, we and Wells Fargo agreed on the financial covenants for 2013 and the first quarter of 2014, constituting the Third Amendment to the Credit Agreement. This amendment also clarified certain definitions and extended the term of the Credit Agreement one year to February 28, 2016.

DEBT

3 Months Ended

Mar. 31, 2013

On February 28, 2012, we terminated our secured line of credit with UMB Bank, which was effective through August 1, 2012, and replaced it with a secured revolving credit facility with Wells Fargo Bank. The Credit Agreement was effective February 28, 2012 and has a maturity date of February 28, 2016. The amount we may borrow under the Credit Agreement is the lesser of the borrowing base calculation and $10,000, and, so long as no default has occurred, we may increase the maximum availability to $20,000 in $2,500 increments. As of March 31, 2013, we had no outstanding borrowings on our credit facility and available capacity was $9,900, net of $100 of letters of credit backed by the facility.

Under the Credit Agreement, we are subject to certain standard affirmative and negative covenants, including the following financial covenants: 1) maintaining a minimum adjusted EBITDA, as defined in the Credit Agreement, of no less than the monthly minimum amounts set forth in an amendment to the Credit Agreement and 2) limiting non-financed capital expenditures to no more than the monthly maximum amounts set forth in an amendment to the Credit Agreement. We were in compliance with all such covenants as of March 31, 2013.

On February 25, 2013, we and Wells Fargo agreed on the financial covenants for 2013 and the first quarter of 2014, constituting the Third Amendment to the Credit Agreement. This amendment also clarified certain definitions and extended the term of the Credit Agreement one year to February 28, 2016.