Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets
Allowance for doubtful accounts and discounts	$ 1,220	$ 2,010
Stockholders' equity
Preferred stock, no par value
Preferred stock, shares authorized	2,500	2,500
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, no par value
Common stock, shares authorized	40,000	40,000
Common stock, shares outstanding	15,814	16,008

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

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