CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2012	Jan. 31, 2012
Current assets
Cash and cash equivalents	$ 7,081	$ 4,209
Restricted cash	1,094	1,854
Trade accounts receivable, less allowance for doubtful accounts of $226 at April 30, 2012 and $235 at January 31, 2012	32,633	28,109
Inventories, net	41,423	39,968
Prepaid expenses and other current assets	5,073	3,973
Deferred tax assets - current	1,946	1,946
Costs and estimated earnings in excess of billings on uncompleted contracts	2,367	2,375
Total current assets	91,617	82,434
Property, plant and equipment, net of accumulated depreciation	49,033	47,842
Other assets
Deferred tax assets - long-term	11,444	10,967
Note receivable from joint venture	5,253	4,195
Investment in joint venture	4,390	4,636
Cash surrender value of deferred compensation plan	2,869	2,782
Other assets	2,424	3,860
Patents, net of accumulated amortization	383	331
Total other assets	26,763	26,771
Total assets	167,413	157,047
Current liabilities
Trade accounts payable	21,183	20,020
Accrued compensation and payroll taxes	5,200	4,571
Commission and management incentives payable	4,499	4,722
Current maturities of long-term debt	3,550	2,736
Customers' Deposits	3,669	2,432
Billings in excess of costs and estimated earnings on uncompleted contracts	1,198	1,978
Other accrued liabilities	2,923	2,610
Income taxes payable	181	417
Total current liabilities	42,403	39,486
Long-term liabilities
Long-term debt, less current maturities	43,798	34,682
Deferred compensation liabilities	6,092	5,686
Other long-term liabilities	4,966	5,074
Total long-term liabilities	54,856	45,442
Stockholders' equity
Common stock, $.01 par value, authorized 50,000 shares; 6,915 issued and outstanding at April 30, 2012 and 6,913 issued and outstanding at January 31, 2012	69	69
Additional paid-in capital	49,927	49,828
Retained earnings	20,746	22,802
Accumulated other comprehensive loss	(588)	(580)
Total stockholders' equity	70,154	72,119
Total liabilities and stockholders' equity	$ 167,413	$ 157,047