Condensed Consolidated Statement Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net income	$ 1,830	$ 5,954
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,327	3,979
Other proceeds/gains resulting from natural disaster, net - 2005 storms
Gain on disposal of assets	(397)	(18)
Provisions for losses on receivables	12	12
Share based compensation	959	707
Deferred income taxes	547	859
Changes in assets and liabilities:
Receivables	(7,527)	(2,691)
Inventories	897	16,112
Prepaid expenses and other current assets	794	69
Other assets	532	(1,932)
Accounts payable	1,006	623
Accrued liabilities	1,199	3,838
Pension liability, net	(216)	(141)
Other long term liabilities	64
Net cash provided by operating activities	4,027	27,371
Cash flows from investing activities:
Proceeds from disposition of assets	493	103
Acquisition of InCon, purchase price adjustment	181
Acquisition of Cyvex, net of cash acquired		(2,086)
Capital expenditures	(8,316)	(3,408)
Net cash used in investing activities	(7,642)	(5,391)
Cash flows from financing activities:
Principal payments of long-term debt	(720)	(735)
Principal payments of capital lease obligation	(119)	(96)
Debt issuance costs	(330)
Proceeds from stock options exercised	47	2,385
Excess tax benefit of stock options exercised	12	1,545
Net cash (used in) provided by financing activities	(1,110)	3,099
Net (decrease) increase in cash and cash equivalents	(4,725)	25,079
Cash and cash equivalents at beginning of year	51,391	19,784
Cash and cash equivalents at end of period	$ 46,666	$ 44,863