Quarterly report pursuant to sections 13 or 15(d)

Consolidated Balance Sheets (Unaudited) (Parenthetical)

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Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Current assets:    
Accounts receivable, allowance for doubtful accounts $ 2,207 $ 2,507
LIABILITIES AND STOCKHOLDERS' EQUITY    
Preferred Stock of subsidiary, par value (in dollars per share) $ 1.00 $ 1.00
Preferred Stock of subsidiary, authorized (in shares) 1,467,396 1,467,396
Preferred Stock of subsidiary, issued plus accrued and unpaid dividends (in shares) 1,284,730 1,284,730
Preferred Stock of subsidiary, outstanding plus accrued and unpaid dividends (in shares) 1,284,730 1,284,730
Preferred Stock of subsidiary, Liquidation value per share (in dollars per share) $ 1.00 $ 1.00
Preferred Stock of subsidiary, unpaid dividends $ 691 $ 674
Stockholders' Equity:    
Preferred Stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred Stock, authorized (in shares) 2,000,000 2,000,000
Preferred Stock, issued (in shares) 0 0
Preferred Stock, outstanding (in shares) 0 0
Common Stock, par value (in dollars per share) $ 0.001 $ 0.001
Common Stock, authorized (in shares) 75,000,000 75,000,000
Common Stock, issued (in shares) 56,310,859 56,238,525
Common Stock, outstanding (in shares) 56,272,649 56,200,315
Common Stock, in treasury (in shares) 38,210 38,210