BUSINESS AND SUMMARY OF ACCOUNTING POLICIES - Retail automotive industrial and aerospace (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Schedule Of Summary Of Accounting Policies [Line Items]
Revenues	$ 11,520,000	$ 14,798,000	$ 24,870,000	$ 29,120,000
Florida Pneumatic [Member]
Schedule Of Summary Of Accounting Policies [Line Items]
Revenues	$ 8,640,000	$ 10,786,000	$ 18,670,000	$ 21,226,000
Percentage of revenue	100.00%	100.00%	100.00%	100.00%
(Decrease) increase	$ (2,146,000)		$ (2,556,000)
Percentage of (Decrease) increase	(19.90%)		(12.00%)
Florida Pneumatic [Member] | Automotive
Schedule Of Summary Of Accounting Policies [Line Items]
Revenues	$ 2,928,000	$ 3,759,000	$ 6,160,000	$ 7,624,000
Percentage of revenue	33.90%	34.80%	33.00%	35.90%
(Decrease) increase	$ (831,000)		$ (1,464,000)
Percentage of (Decrease) increase	(22.10%)		(19.20%)
Florida Pneumatic [Member] | Retail
Schedule Of Summary Of Accounting Policies [Line Items]
Revenues	$ 2,860,000	$ 3,427,000	$ 5,851,000	$ 6,139,000
Percentage of revenue	33.10%	31.80%	31.30%	28.90%
(Decrease) increase	$ (567,000)		$ (288,000)
Percentage of (Decrease) increase	(16.50%)		(4.70%)
Florida Pneumatic [Member] | Aerospace
Schedule Of Summary Of Accounting Policies [Line Items]
Revenues	$ 1,934,000	$ 2,231,000	$ 4,533,000	$ 4,591,000
Percentage of revenue	22.40%	20.70%	24.30%	21.60%
(Decrease) increase	$ (297,000)		$ (58,000)
Percentage of (Decrease) increase	(13.30%)		(1.30%)
Florida Pneumatic [Member] | Industrial
Schedule Of Summary Of Accounting Policies [Line Items]
Revenues	$ 817,000	$ 1,223,000	$ 1,879,000	$ 2,547,000
Percentage of revenue	9.40%	11.30%	10.10%	12.00%
(Decrease) increase	$ (406,000)		$ (668,000)
Percentage of (Decrease) increase	(33.20%)		(26.20%)
Florida Pneumatic [Member] | Other
Schedule Of Summary Of Accounting Policies [Line Items]
Revenues	$ 101,000	$ 146,000	$ 247,000	$ 325,000
Percentage of revenue	1.20%	1.40%	1.30%	1.60%
(Decrease) increase	$ (45,000)		$ (78,000)
Percentage of (Decrease) increase	(30.80%)		(24.00%)
Hy-Tech [Member]
Schedule Of Summary Of Accounting Policies [Line Items]
Revenues	$ 2,880,000	$ 4,012,000	$ 6,200,000	$ 7,894,000
Percentage of revenue	100.00%	100.00%	100.00%	100.00%
(Decrease) increase	$ (1,132,000)		$ (1,694,000)
Percentage of (Decrease) increase	(28.20%)		(21.50%)
Hy-Tech [Member] | OEM
Schedule Of Summary Of Accounting Policies [Line Items]
Revenues	$ 569,000	$ 1,912,000	$ 2,641,000	$ 2,959,000
Percentage of revenue	19.80%	47.70%	42.60%	37.50%
(Decrease) increase	$ (1,343,000)		$ (318,000)
Percentage of (Decrease) increase	(70.20%)		(10.70%)
Hy-Tech [Member] | ATP
Schedule Of Summary Of Accounting Policies [Line Items]
Revenues	$ 1,202,000	$ 1,622,000	$ 1,629,000	$ 3,898,000
Percentage of revenue	41.70%	40.40%	26.30%	49.40%
(Decrease) increase	$ (420,000)		$ (2,269,000)
Percentage of (Decrease) increase	(25.90%)		(58.20%)
Hy-Tech [Member] | PTG
Schedule Of Summary Of Accounting Policies [Line Items]
Revenues	$ 1,021,000	$ 242,000	$ 1,757,000	$ 597,000
Percentage of revenue	35.50%	6.00%	28.30%	7.60%
(Decrease) increase	$ 779,000		$ 1,160,000
Percentage of (Decrease) increase	321.90%		194.30%
Hy-Tech [Member] | Other
Schedule Of Summary Of Accounting Policies [Line Items]
Revenues	$ 88,000	$ 236,000	$ 173,000	$ 440,000
Percentage of revenue	3.00%	5.90%	2.80%	5.50%
(Decrease) increase	$ (148,000)		$ (267,000)
Percentage of (Decrease) increase	(62.70%)		(60.70%)