CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash Flows from Operating Activities:
Net income (loss)	$ 911,000	$ (38,000)
Non-cash charges:
Depreciation and amortization	1,020,000	975,000
Amortization of other intangible assets	531,000	620,000
Amortization of debt issue costs	71,000	42,000
Amortization of costs for contribution to customer	42,000	0
Provision for (recovery of) losses on accounts receivable - net	242,000	(12,000)
Stock-based compensation	169,000	20,000
Restricted stock-based compensation	32,000	30,000
Gain on sale of fixed assets	(6,000)	(8,000)
Deferred income taxes	292,000	142,000
Fair value increase in contingent consideration	86,000	14,000
Changes in operating assets and liabilities:
Accounts receivable	(2,914,000)	(2,252,000)
Inventories	(618,000)	1,468,000
Prepaid expenses and other current assets	185,000	2,154,000
Other assets	0	45,000
Accounts payable	582,000	842,000
Accrued compensation and benefits	73,000	(129,000)
Accrued other liabilities	(89,000)	(623,000)
Other liabilities	(15,000)	(14,000)
Total adjustments	(317,000)	3,314,000
Net cash provided by operating activities	594,000	3,276,000
Cash Flows from Investing Activities:
Capital expenditures	(1,757,000)	(444,000)
Purchase of net assets of Jiffy Air Tool, Inc.	0	(6,845,000)
Purchase of patents	0	(200,000)
Proceeds from disposal of assets	25,000	8,000
Net cash used in investing activities	(1,732,000)	(7,481,000)
Cash Flows from Financing Activities:
Dividend payments	(544,000)	(542,000)
Proceeds from exercise of stock options	737,000	62,000
Purchase of Class A common stock	(589,000)	(89,000)
Net proceeds from short-term borrowings	1,679,000	2,334,000
Proceeds from long-term debt	400,000	0
Repayments of long-term debt	(27,000)	(14,000)
Payment of debt issue costs	(3,000)	(74,000)
Net cash provided by financing activities	1,653,000	1,677,000
Effect of exchange rate changes on cash	(27,000)	34,000
Net increase (decrease) in cash	488,000	(2,494,000)
Cash at beginning of period	1,241,000	3,699,000
Cash at end of period	1,729,000	1,205,000
Supplemental disclosures of cash flow information:
Cash paid for: Interest	83,000	74,000
Cash paid for: Income taxes	77,000	342,000
Supplemental disclosures of non-cash investing and financing activities:
Contingent consideration on acquisition	$ 0	$ 692,000