Concentration of Credit Risk	12 Months Ended
Dec. 31, 2011
Concentration of Credit Risk [Abstract]
Concentration of Credit Risk	15. Concentration of Credit Risk The Company maintains its cash in bank deposit accounts at high credit quality financial institutions or in highly rated money market funds as permitted by its Credit Agreement. The balances, at many times, exceed federally insured limits. The Company provides services to a diversified group of customers in the oil and natural gas exploration and production industry. Credit is extended based on an evaluation of each customer’s financial condition. The Company maintains an allowance for doubtful accounts receivable based on expected collectability and establishes a reserve when payment is unlikely to occur.

The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

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+ Details