Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Condensed Consolidated Balance Sheets
Allowance for doubtful accounts	$ 1,700	$ 1,700
Common Stock, no par value
Common Stock, shares authorized	40,000	40,000
Common Stock, shares issued	24,361	24,235
Common Stock, shares outstanding	24,361	24,235

For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

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-Name Regulation S-X (SX)
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-Section 02
-Paragraph 4
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-Section S99
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Issuance value per share of no-par value common stock; generally not indicative of the fair market value per share.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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