Accounts Receivable

3 Months Ended

Mar. 31, 2012

Accounts Receivable [Abstract]

ACCOUNTS RECEIVABLE

4. ACCOUNTS RECEIVABLE

Credit is extended based upon an evaluation of the customer's financial condition and, generally, collateral is not required.  Credit terms are consistent with industry standards and practices.  Trade accounts receivable at March 31, 2012 and December 31, 2011 have been reduced by an allowance for doubtful accounts of ($1,717,000) and ($1,810,000), respectively.