D. ACCOUNTS RECEIVABLE (Tables)
|12 Months Ended|
Dec. 31, 2017
|Schedule of accounts receivable||
Components of accounts receivable as of December 31, 2017 and 2016 are as follows:
Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables.
Reference 1: http://www.xbrl.org/2003/role/presentationRef