CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Accounts receivable, reserves (in dollars)	$ 2,397	$ 1,485
Preferred shares, authorized	5,000	5,000
Preferred shares, issued	0	0
Common shares, authorized	60,000	60,000
Common shares, issued	28,433	27,097
Common shares, outstanding	28,054	26,222
Common shares held in treasury, shares	379	875

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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