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Fair Value Measurements (Details) (Fair value measurement on a recurring basis, USD $)
In Thousands
Sep. 30, 2011
Quoted Prices in Active Markets for Identical Assets (Level 1)
 
Assets: 
Common stock$ 18,450
Assets25,473
Liabilities: 
Deferred compensation plan liability7,023
Liabilities7,023
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mutual funds
 
Assets: 
Marketable securities in deferred compensation plan5,393
Quoted Prices in Active Markets for Identical Assets (Level 1) | Common Shares
 
Assets: 
Marketable securities in deferred compensation plan845
Quoted Prices in Active Markets for Identical Assets (Level 1) | Preferred Shares
 
Assets: 
Marketable securities in deferred compensation plan314
Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash and cash equivalents
 
Assets: 
Marketable securities in deferred compensation plan271
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other.
 
Assets: 
Marketable securities in deferred compensation plan200
Significant Other Observable Inputs (Level 2)
 
Assets: 
Warrants to purchase common shares in KEYW121
Assets121
Liabilities: 
Interest rate derivatives30,629
Liabilities30,629
Total Estimated Fair Value
 
Assets: 
Common stock18,450
Warrants to purchase common shares in KEYW121
Assets25,594
Liabilities: 
Deferred compensation plan liability7,023
Interest rate derivatives30,629
Liabilities37,652
Total Estimated Fair Value | Mutual funds
 
Assets: 
Marketable securities in deferred compensation plan5,393
Total Estimated Fair Value | Common Shares
 
Assets: 
Marketable securities in deferred compensation plan845
Total Estimated Fair Value | Preferred Shares
 
Assets: 
Marketable securities in deferred compensation plan314
Total Estimated Fair Value | Cash and cash equivalents
 
Assets: 
Marketable securities in deferred compensation plan271
Total Estimated Fair Value | Other.
 
Assets: 
Marketable securities in deferred compensation plan$ 200