CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Flows from Operating Activities:
Net loss	$ (758,000)	$ (26,000)
Non-cash charges:
Depreciation and amortization	433,000	389,000
Amortization of other intangible assets	195,000	172,000
Amortization of operating leased assets	234,000	81,000
Amortization of debt issue costs	4,000	15,000
Amortization of consideration payable to a customer	67,000	67,000
Provision for (recovery of) losses on accounts receivable	15,000	(69,000)
Stock-based compensation	16,000	29,000
Loss on sale of property and equipment	0	6,000
Restricted stock-based compensation	13,000	13,000
Deferred income taxes	(47,000)	(25,000)
Changes in operating assets and liabilities:
Accounts receivable	720,000	654,000
Inventories	524,000	(88,000)
Prepaid expenses and other current assets	(528,000)	(208,000)
Accounts payable	482,000	(48,000)
Accrued compensation and benefits	(894,000)	(1,282,000)
Accrued other liabilities and other current liabilities	(556,000)	(99,000)
Operating lease liabilities	(230,000)	(65,000)
Other liabilities	(6,000)	(6,000)
Total adjustments	442,000	(464,000)
Net cash used in operating activities	(316,000)	(490,000)
Cash Flows from Investing Activities:
Capital expenditures	(658,000)	(485,000)
Proceeds from disposal of property and equipment	0	11,000
Net cash used in investing activities	(658,000)	(474,000)
Cash Flows from Financing Activities:
Dividend payments	(157,000)	(158,000)
Proceeds from exercise of stock options	3,000	0
Purchase of Class A common stock	0	(3,202,000)
Net proceeds from short-term borrowings	1,284,000	4,258,000
Repayments of long-term debt	0	(20,000)
Bank finance costs	0	(20,000)
Net cash provided by financing activities	1,130,000	858,000
Effect of exchange rate changes on cash	(5,000)	5,000
Net increase (decrease) in cash	151,000	(101,000)
Cash at beginning of period	380,000	999,000
Cash at end of period	531,000	898,000
Cash paid for:
Interest	53,000	37,000
Cash paid for amounts included in the measurement of operating lease liabilities	0	4,000
Noncash information:
Right of Use ("ROU") assets recognized for new operating lease liabilities	0	80,000
Operating lease liability related to ROU assets recognized upon adoption of ASC 842	$ 0	$ 577,000