Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Operating activities
Net income (loss)	$ 5,476	$ 3,893
Adjustments to reconcile from net income to net cash provided by operating activities:
Depreciation, depletion and amortization	13,923	17,337
Amortization of deferred financing fees	448	946
Deferred income taxes	18,201	(4,636)
Centennial asset impairment charge	17,443	0
Other	(1,651)	(533)
Working capital changes:
Accounts receivable	9,160	59,757
Inventories	(39,065)	(43,832)
Other current assets	930	2,056
Accounts payable	55,187	29,056
Income taxes receivable/payable	(20,911)	(8,506)
Other current liabilities	(12,983)	4,276
Net cash provided by operating activities	46,158	59,814
Investing activities
Expenditures for property, plant and equipment	(11,689)	(7,484)
Proceeds from the sale of property, plant, and equipment	4,347	1,843
Other	(2,587)	(683)
Net cash used for investing activities	(9,929)	(6,324)
Financing activities
Additions to long-term debt	0	2,547
Reductions of long-term debt	(29,560)	(2,300)
Net reductions to revolving credit agreements	(3,115)	(74,143)
Cash dividends paid	(5,450)	(5,502)
Purchase of treasury shares	(6,044)	(23,248)
Other	(189)	(78)
Net cash used for financing activities	(44,358)	(102,724)
Effect of exchange rate changes on cash	(104)	(54)
Cash and cash equivalents
Decrease for the period	(8,233)	(49,288)
Balance at the beginning of the period	52,499	61,135
Balance at the end of the period	$ 44,266	$ 11,847