Consolidated Condensed Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Allowance for doubtful accounts	$ 450	$ 450
Preferred stock, authorized	4,000,000us-gaap_PreferredStockSharesAuthorized	4,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, issued	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Common stock, par value	$ 1	$ 1
Common stock, authorized	100,000,000us-gaap_CommonStockSharesAuthorized	100,000,000us-gaap_CommonStockSharesAuthorized
Common stock, issued	40,605,179us-gaap_CommonStockSharesIssued	40,536,879us-gaap_CommonStockSharesIssued
Accumulated other comprehensive loss, tax	$ (77,586)us-gaap_OtherComprehensiveIncomeLossTax	$ (64,868)us-gaap_OtherComprehensiveIncomeLossTax

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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