Accounts Receivable

12 Months Ended

Dec. 31, 2015

Accounts Receivable [Abstract]

Loans, Notes, Trade and Other Receivables Disclosure [Text Block]

ACCOUNTS RECEIVABLE

December 31,	2015			2014
(Thousands of dollars)
Trade receivables	$	103,202		$	96,177
Other receivables	10,253			6,830
	113,455			103,007
Allowance for doubtful accounts	(867		)	(514		)
Accounts receivable, net	$	112,588		$	102,493

The following percentages of our consolidated net sales were made to Ford, GM, Toyota and Fiat Chrysler Automobiles: 2015 - 44 percent, 24 percent, 14 percent and 8 percent and 2014 - 44 percent, 24 percent, 12 percent and 10 percent, respectively. These four customers represented 90 percent and 92 percent of trade receivables at December 31, 2015 and 2014, respectively.