CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash Flows from Operating Activities:
Net income (loss)	$ 370,000	$ (44,000)
Non-cash charges:
Depreciation and amortization	660,000	650,000
Amortization of other intangible assets	359,000	439,000
Amortization of debt issue costs	50,000	25,000
Provision for (recovery of) losses on accounts receivable - net	95,000	(5,000)
Stock-based compensation	120,000	0
Gain on sale of fixed assets	(6,000)	(1,000)
Restricted stock-based compensation	18,000	22,000
Deferred income taxes	99,000	(24,000)
Fair value increase in contingent consideration	57,000	0
Changes in operating assets and liabilities:
Accounts receivable	(250,000)	(1,059,000)
Inventories	(1,332,000)	1,399,000
Prepaid expenses and other current assets	(267,000)	199,000
Other assets	0	32,000
Accounts payable	1,866,000	384,000
Accrued compensation and benefits	(603,000)	(618,000)
Accrued other liabilities	(397,000)	(822,000)
Other liabilities	(10,000)	(9,000)
Total adjustments	459,000	612,000
Net cash provided by operating activities	829,000	568,000
Cash Flows from Investing Activities:
Capital expenditures	(1,224,000)	(358,000)
Purchase of net assets of Jiffy Air Tool, Inc.	0	(6,845,000)
Proceeds from disposal of assets	25,000	1,000
Net cash used in investing activities	(1,199,000)	(7,202,000)
Cash Flows from Financing Activities:
Dividend payments	(359,000)	(360,000)
Proceeds from exercise of stock options	737,000	62,000
Purchase of Class A common stock	(430,000)	0
Net proceeds from short-term borrowings	311,000	4,537,000
Proceeds from long-term debt	400,000	0
Repayments of long-term debt	(7,000)	(10,000)
Payment of debt issue costs	(15,000)	(50,000)
Net cash provided by financing activities	637,000	4,179,000
Effect of exchange rate changes on cash	(20,000)	25,000
Net increase (decrease) in cash	247,000	(2,430,000)
Cash at beginning of period	1,241,000	3,699,000
Cash at end of period	1,488,000	1,269,000
Supplemental disclosures of cash flow information:
Cash paid for: Interest	44,000	36,000
Cash paid for: Income taxes	21,000	335,000
Supplemental disclosures of non-cash investing and financing activities:
Contingent consideration on acquisition	$ 0	$ 692,000