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Condensed Consolidated Balance Sheets (Unaudited) (USD $)
In Thousands
Sep. 30, 2011
Mar. 31, 2011
Current assets:  
Cash and cash equivalents$ 33,043$ 19,565
Investments4,70023,518
Trade accounts receivable, net of allowances ($50 and $26 at September 30 and March 31, 2011, respectively)18,1308,681
Unbilled revenue14,13014,280
Inventories6,6098,257
Prepaid expenses and other current assets828826
Deferred income tax asset2,0102,015
Total current assets79,45077,142
Property, plant and equipment, net12,75711,705
Prepaid pension asset7,0966,680
Goodwill6,9146,914
Permits10,30010,300
Other intangible assets, net5,0575,218
Other assets110112
Total assets121,684118,071
Current liabilities:  
Current portion of capital lease obligations6447
Accounts payable6,3359,948
Accrued compensation5,0734,580
Accrued expenses and other current liabilities3,3713,448
Customer deposits9,70212,854
Income taxes payable2,2761,772
Total current liabilities26,82132,649
Capital lease obligations267116
Accrued compensation271259
Deferred income tax liability9,1588,969
Accrued pension liability232234
Accrued postretirement benefits909892
Other long-term liabilities1,4591,297
Total liabilities39,11744,416
Commitments and contingencies (Note 13)  
Stockholders' equity:  
Preferred stock, $1.00 par value--Authorized, 500 shares;  
Common stock, $.10 par value--Authorized, 25,500 shares Issued, 10,253 and 10,216 shares at September 30 and March 31, 2011, respectively1,0251,022
Capital in excess of par value16,88316,322
Retained earnings72,71164,623
Accumulated other comprehensive loss(4,830)(5,012)
Treasury stock (339 and 350 shares at September 30 and March 31, 2011, respectively)(3,222)(3,300)
Total stockholders' equity82,56773,655
Total liabilities and stockholders' equity$ 121,684$ 118,071