Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ (31,168)	$ 5,361	[1]
Adjustments to reconcile net income (loss) to cash provided (used) by operating activities:
Deferred income taxes	(1,598)	(1,222)
Depreciation	11,495	12,849
Amortization	7,098	6,992
Concrete Tie Settlement expense (Note 19)	43,400	0
Equity loss (income) in non consolidated investment	7	(6)
Loss on sales and disposals of property, plant, and equipment	1,297	18
Stock-based compensation	3,836	1,696
Change in operating assets and liabilities:
Accounts receivable	(11,438)	(9,217)
Inventories	(23,403)	(14,657)
Other current assets	140	350
Prepaid income tax	(249)	13,978
Other noncurrent assets	1,319	959
Accounts payable	24,210	14,600
Deferred revenue	(3,491)	2,440
Accrued payroll and employee benefits	1,233	4,260
Other current liabilities	4,046	(588)
Other liabilities	(770)	1,559
Net cash provided by operating activities	25,964	39,372
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the sale of property, plant, and equipment	2,389	1,462
Capital expenditures on property, plant, and equipment	(5,251)	(6,149)
Proceeds from sale of equity method investments	3,875	0
Repayment of revolving line of credit from equity method investment	1,235	0
Net cash provided by (used in) investing activities	2,248	(4,687)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of debt	(195,254)	(182,718)
Proceeds from debt	140,270	153,118
Treasury stock acquisitions	(316)	(103)
Net cash (used) provided by in financing activities	(55,300)	(29,703)
Effect of exchange rate changes on cash and cash equivalents	(308)	2,333
Net (decrease) increase in cash and cash equivalents	(27,396)	7,315
Cash and cash equivalents at beginning of period	37,678	30,363
Cash and cash equivalents at end of period	10,282	37,678
Supplemental disclosure of cash flow information:
Interest paid	5,577	7,589
Income taxes paid (received)	$ 4,512	$ (11,189)

[1] The balances as of January 1, 2017 and the year ended December 31, 2017 amounts have been adjusted to reflect the change in inventory accounting method, as described in Notes 1 and 6 to the Consolidated Financial Statements.