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(Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current	$ 3,782	$ 3,714
Liabilities and Equity [Abstract]
Common Stock, No Par Value	$ 0	$ 0
Common Stock, Shares Authorized	120,000,000	120,000,000
Treasury Stock, Shares	89,612	427,771
Common Stock, Shares, Issued	61,466,593	60,710,983

X

- Definition

Amount of allowance for credit loss on accounts receivable, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(4)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-Section 50
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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121599878&loc=SL82895884-210446

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- Definition

Face amount per share of no-par value common stock.

+ References

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-SubTopic 10
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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

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- Definition

Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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