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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ / shares in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Cash and cash equivalents | $ 175,442 | $ 428,150
Allowance for doubtful accounts | 10,170,256 | 10,830,555
Inventories, net | 20,837,907 | 20,007,488
Prepaid expenses | 658,164 | 858,158
Office furniture and equipment | 2,656,519 | 2,649,280
Goodwill | 0 | 1,473,176
Checks written in excess of bank balance | 654,646 | 636,142
Trade payables | 8,680,004 | 6,679,670
Line of credit | 15,351,709 | 16,582,963
Accrued liabilities | 1,649,707 | 1,866,796
Notes payable | $ 639,327 | $ 399,912
Preferred stock, par value (in dollars per share) | $ 0 | $ 0
Preferred stock, shares authorized (in shares) | 3,000,000 | 3,000,000
Preferred stock, shares issued (in shares) | 0 | 0
Preferred stock, shares outstanding (in shares) | 0 | 0
Common stock, no par value (in dollars per share) | $ 0 | $ 0
Common stock, shares authorized (in shares) | 15,000,000 | 15,000,000
Common stock, shares issued (in shares) | 3,779,608 | 3,779,608
Common stock, shares outstanding (in shares) | 3,730,950 | 3,730,950
Treasury stock, shares (in shares) | 43,658 | 43,658
Variable Interest Entity, Primary Beneficiary [Member] |  |
Cash and cash equivalents | $ 3,000 | $ 57,000
Allowance for doubtful accounts | 524,000 | 85,000
Inventories, net | 315,000 | 340,000
Prepaid expenses | 106,000 | 127,000
Office furniture and equipment | 303,000 | 303,000
Accumulated depreciation and amortization | 106,000 | 104,000
Goodwill | 0 | 440,000
Checks written in excess of bank balance | 4,000 | 7,000
Trade payables | 142,000 | 62,000
Line of credit | 249,000 | 267,000
Accrued liabilities | 47,000 | 89,000
Notes payable | $ 30,000 | $ 27,000

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