CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cash Flows from Operating Activities
Net income (loss) from operations	$ 856,000	$ (884,000)
Non-cash charges:
Depreciation and amortization	1,383,000	1,309,000
Amortization of other intangible assets	702,000	800,000
Amortization of debt issue costs	95,000	64,000
Amortization of consideration payable to customer	122,000	0
Provision for doubtful accounts	121,000	66,000
Stock-based compensation	196,000	80,000
Restricted stock-based compensation	45,000	38,000
(Gain) loss on sale of fixed assets	(1,000)	21,000
Deferred income taxes	253,000	912,000
Fair value increase in contingent consideration	150,000	158,000
Changes in operating assets and liabilities:
Accounts receivable	482,000	(1,384,000)
Inventories	(901,000)	1,913,000
Prepaid expenses and other current assets	83,000	1,857,000
Other assets	(988,000)	45,000
Accounts payable	317,000	40,000
Accrued compensation and benefits	395,000	120,000
Accrued other liabilities	(324,000)	(502,000)
Other liabilities	(20,000)	(19,000)
Total adjustments	2,110,000	5,518,000
Net cash provided by operating activities	2,966,000	4,634,000
Cash Flows from Investing Activities:
Capital expenditures	(1,878,000)	(910,000)
Proceeds from disposal of assets	26,000	12,000
Purchase of net assets of Jiffy Air Tool, Inc.	0	(6,845,000)
Purchase of patents	0	(200,000)
Net cash used in investing activities	(1,852,000)	(7,943,000)
Cash Flows from Financing Activities:
Dividend payments	(723,000)	(722,000)
Proceeds from exercise of stock options	806,000	62,000
Purchase of Class A Common Stock	(1,516,000)	(358,000)
Net proceeds from short-term borrowings	168,000	1,928,000
Repayments of notes payable	(47,000)	(14,000)
Payments of debt issue costs	(3,000)	(84,000)
Net cash (used in) provided by financing activities	(1,315,000)	812,000
Effect of exchange rate changes on cash	(41,000)	39,000
Net decrease in cash	(242,000)	(2,458,000)
Cash at beginning of year	1,241,000	3,699,000
Cash at end of year	999,000	1,241,000
Supplemental disclosures of cash flow information:
Cash paid for: Interest	130,000	97,000
Cash paid for: Income taxes	86,000	409,000
Supplemental disclosures of non-cash investing and financing activities:
Contingent consideration on acquisition	0	692,000
Capital expenditures financed	$ 400,000	$ 0