Balance Sheet Details (Tables)

9 Months Ended

Sep. 30, 2016

Balance Sheet Details [Abstract]

Schedule of Other Assets and Other Liabilities [Table Text Block]

The following table provides detail of selected balance sheet items:

(dollars in thousands)	September 30, 2016		December 31, 2015
Accounts receivable:
Trade receivables	$	97,057	$	91,324
Other receivables	1,490		3,055
Total accounts receivable, less allowances of $6,407 and $7,066	$	98,547	$	94,379
Inventories:
Finished goods	$	173,357	$	159,998
Work in process	1,581		1,183
Raw materials	4,585		4,944
Repair parts	10,790		10,763
Operating supplies	1,166		1,139
Total inventories, less loss provisions of $12,860 and $5,313	$	191,479	$	178,027
Accrued liabilities:
Accrued incentives	$	31,470	$	21,450
Other accrued liabilities	22,494		23,729
Total accrued liabilities	$	53,964	$	45,179