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Note 4 - Accounts Receivable | 12 Months Ended
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Dec. 31, 2019
Notes to Financial Statements |
Financing Receivables [Text Block] | 4. Accounts Receivable: Accounts receivable are presented net of allowances for doubtful accounts and unissued credits of $3.7 million and $3.9 million as of December 31, 2019 and 2018, respectively. Bad debt expense totaled $0.6 million in 2019, 2018 and 2017. The Company’s allowance for doubtful accounts is maintained at a level considered appropriate based on historical experience and specific customer collection issues that the Company has identified. Estimations are based upon a calculated percentage of accounts receivable, which remains fairly level from year to year, and judgments about the probable effects of economic conditions on certain customers, which can fluctuate significantly from year to year. The Company cannot guarantee that the rate of future credit losses will be similar to past experience. The Company considers all available information when assessing the adequacy of its allowance for doubtful accounts.

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