CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
CONDENSED CONSOLIDATED BALANCE SHEETS
Accounts receivable, reserves (in dollars)	$ 813	$ 1,289
Preferred shares, no par value	$ 0	$ 0
Preferred shares, authorized	5,000	5,000
Preferred shares, issued	0	0
Common shares, no par value	$ 0	$ 0
Common shares, authorized	60,000	60,000
Common shares, issued	28,966	28,966
Common shares, outstanding	26,993	27,408
Common shares held in treasury, shares	1,973	1,558

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

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

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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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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