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Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Current assets:    
Cash $ 23,624 $ 35,085 [1]
Receivables:    
Trade, net of allowance for doubtful accounts of $669 and $340, respectively 104,859 68,611 [1]
Other 1,454 1,187 [1]
Total receivables 106,313 69,798 [1]
Inventories 92,815 71,068 [1]
Prepaid expenses and other short-term assets 7,949 4,167 [1]
Income taxes receivable 52 203 [1]
Total current assets 230,753 180,321 [1]
Property, plant and equipment, net 45,180 35,537 [1]
Intangible assets 111,570 116,189 [1]
Other assets 10,113 7,094 [1]
Total assets 397,616 339,141 [1]
Current liabilities:    
Current installments of long-term debt 15,615 14,460 [1]
Current installments of other liabilities 1,221 1,038 [1]
Accounts payable 31,871 23,214 [1]
Deferred revenue 1,301 7,571 [1]
Accrued program costs 63,268 25,910 [1]
Accrued expenses and other payables 9,927 6,832 [1]
Total current liabilities 123,203 79,025 [1]
Long-term debt, excluding current installments 38,500 51,917 [1]
Other liabilities, excluding current installments 5,318 5,955 [1]
Deferred income taxes 15,172 15,172 [1]
Total liabilities 182,193 152,069 [1]
Commitments and contingent liabilities       [1]
Stockholders' equity:    
Preferred stock, $.10 par value per share; authorized 400,000 shares; none issued       [1]
Common stock, $.10 par value per share; authorized 40,000,000 shares; issued 30,316,794 shares at September 30, 2012 and 29,845,047 shares at December 31, 2011 3,032 2,985 [1]
Additional paid-in capital 51,528 45,966 [1]
Accumulated other comprehensive loss (1,735) (2,250) [1]
Retained earnings 165,751 143,524 [1]
Total stockholders' equity including treasury stock 218,576 190,225 [1]
Less treasury stock, at cost, 2,260,996 shares at September 30, 2012 and at December 31, 2011 (3,153) (3,153) [1]
Total stockholders' equity 215,423 187,072 [1]
Total liabilities and stockholders' equity $ 397,616 $ 339,141 [1]
[1] The balance sheet at December 31, 2011 has been derived from the audited financial statements at that date.