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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Statement Of Financial Position [Abstract]
Trade accounts receivable, allowance for doubtful accounts	$ 10,977	$ 13,543
Common shares, par value	$ 0.10	$ 0.10
Common shares, authorized	50,000,000	50,000,000
Common shares, issued	18,494,258	19,339,329
Common shares, outstanding	18,494,258	19,339,329

X

- Definition

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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Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

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