Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Income (loss) from continuing operations	$ 12,208	$ (342)
Adjustments to reconcile income from continuing operations to net cash provided by operating activities:
Deferred income taxes	(444)	(6,576)
Depreciation and amortization	4,741	6,105
Equity in income of nonconsolidated investment	(596)	(332)
(Gain) loss on sales and disposals of property, plant and equipment	49	286
Deferred gain amortization on sale-leaseback		(456)
Share-based compensation	1,091	835
Excess tax benefit from share-based compensation	(133)	(37)
Change in operating assets and liabilities:
Accounts receivable	(19,700)	(25,372)
Inventories	7,994	5,840
Other current assets	(840)	(1,194)
Prepaid income tax	(2,711)	1,870
Other noncurrent assets	148	66
Dividend from L B Pipe & Coupling Products, LLC	468
Accounts payable - trade	2,214	7,815
Deferred revenue	2,483	(807)
Accrued payroll and employee benefits	(2,766)	(2,360)
Other current liabilities	(4,274)	18,700
Other liabilities	(454)	(411)
Net cash (used) provided by continuing operating activities	(522)	3,630
Net cash provided (used) by discontinued operations	229	(1,141)
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from the sale of property, plant and equipment		7
Capital expenditures on property, plant and equipment	(3,126)	(4,810)
Net cash used by continuing investing activities	(3,126)	(4,803)
Net cash used by discontinued operations		8,524
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of other long-term debt	(24)	(1,708)
Proceeds from exercise of stock options and stock awards		13
Treasury stock acquisitions	(610)	(645)
Cash dividends on common stock paid to shareholders	(620)	(514)
Excess tax benefit from share-based compensation	133	37
Net cash used by continuing financing activities	(1,121)	(2,817)
Effect of exchange rate changes on cash and cash equivalents	(2,246)	123
Net (decrease) increase in cash and cash equivalents	(6,786)	3,516
Cash and cash equivalents at beginning of period	101,464	73,727
Cash and cash equivalents at end of period	94,678	77,243
Supplemental Disclosure of Cash Flow Information:
Interest paid	175	197
Income taxes paid	$ 8,558	$ 6,276