Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) income	$ (2,832)	$ 4,285
Adjustments to reconcile net (loss) income to cash provided by operating activities:
Deferred income taxes	(219)	(206)
Depreciation	3,727	2,619
Amortization	3,266	2,157
Equity loss (income)	196	(173)
Loss on sales and disposals of property, plant, and equipment	71	0
Share-based compensation	(252)	620
Excess income tax deficiency (benefit) from share-based compensation	76	(310)
Change in operating assets and liabilities, net of acquisitions:
Accounts receivable	4,274	16,044
Inventories	4,101	(8,276)
Other current assets	(2,095)	(1,059)
Prepaid income tax	(4,630)	(745)
Other noncurrent assets	144	(1,429)
Dividends from LB Pipe & Coupling Products, LLC	0	90
Accounts payable	(9,227)	(12,478)
Deferred revenue	1,463	(1,083)
Accrued payroll and employee benefits	(2,968)	(5,540)
Other current liabilities	(31)	(1,928)
Other liabilities	(171)	(17)
Net cash used by operating activities	(5,107)	(7,429)
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from the sale of property, plant, and equipment	97	4
Capital expenditures on property, plant and equipment	(3,125)	(4,466)
Acquisitions, net of cash acquired	0	(189,200)
Loan to equity method investment	(575)	0
Net cash used by investing activities	(3,603)	(193,662)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of debt	(37,142)	(28,084)
Proceeds from debt	43,304	219,891
Proceeds from exercise of stock options and stock awards	0	68
Financing fees	0	(1,670)
Treasury stock acquisitions	(168)	(962)
Cash dividends on common stock paid to shareholders	(414)	(416)
Excess income tax (deficiency) benefit from share-based compensation	(76)	310
Net cash provided by financing activities	5,504	189,137
Effect of exchange rate changes on cash and cash equivalents	777	(2,520)
Net decrease in cash and cash equivalents	(2,429)	(14,474)
Cash and cash equivalents at beginning of period	33,312	52,024
Cash and cash equivalents at end of period	30,883	37,550
Supplemental Disclosure of Cash Flow Information:
Interest paid	1,056	288
Income taxes paid	$ 3,585	$ 3,551