Following are the components of selected items from the Consolidated Balance Sheets:




	July 31, 2012			January 31, 2012			July 31, 2011
Accounts Receivable, net:
Trade accounts	$	50,055		$	60,929		$	43,510
Allowance for doubtful accounts	(170		)	(170		)	(262		)
	$	49,885		$	60,759		$	43,248
Inventories:
Finished goods	$	7,394		$	7,094		$	7,780
In process	4,979			6,105			7,687
Materials	38,016			41,557			34,782
	$	50,389		$	54,756		$	50,249
Property, plant and equipment, net:
Property, plant and equipment	$	145,433		$	128,948		$	111,518
Accumulated depreciation	(72,244		)	(67,054		)	(63,507		)
	$	73,189		$	61,894		$	48,011
Accrued liabilities:
Salaries and benefits	$	2,993		$	4,297		$	2,356
Vacation	4,155			4,387			3,484
401(k) contributions	611			966			271
Insurance obligations	3,003			2,789			3,085
Profit sharing	612			1,244			536
Warranties	1,949			1,699			1,642
Acquisition-related contingent consideration	7,028			3,266			271
Taxes - Accrued and withheld	1,999			2,596			2,244
Other	1,621			1,749			998
	$	23,971		$	22,993		$	14,887
Other liabilities:
Postretirement benefits	$	7,520		$	7,348		$	5,880
Acquisition-related contingent consideration	2,108			7,655			2,076
Deferred income taxes	3,919			4,518			517
Uncertain tax positions	5,657			4,946			4,756
	$	19,204		$	24,467		$	13,229