Accounts Receivable	3 Months Ended
Accounts Receivable	Mar. 31, 2018
Receivables [Abstract]
Accounts Receivable	Accounts Receivable Trade accounts receivable are stated at current value less an allowance for doubtful accounts, which approximates fair value. This allowance is estimated based primarily on management’s evaluation of specific balances as the balances become past due, the financial condition of our customers and our historical experience with write-offs. If not reserved through specific identification procedures, our general policy for potentially uncollectible accounts is to reserve at a certain percentage based upon the aging categories of accounts receivable and our historical experience with write-offs. Past due status is based upon the due date of the original amounts outstanding. When items are ultimately deemed uncollectible they are charged off against the reserve previously established in the allowance for doubtful accounts.

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.