The amount of right use of assets acquired during the period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of lease obligation assumed in business combination.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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The amount of inventory recognized as of the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount of deferred tax liability attributable to taxable temporary differences from tax deferred revenue or income classified as other.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of (increase) decrease to an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from the subsequent recognition of deferred tax assets.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Amount of undistributed earnings (loss) allocated to common stock as if earnings had been distributed. Excludes distributed earnings.

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ACQUISITION (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Mar. 07, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
ACQUISITIONS
Goodwill		$ 60,460		$ 60,460		$ 52,935
Revenues		94,653	$ 96,633	273,696	$ 283,159
Dynamic Controls
ACQUISITIONS
Business acquisition percentage of voting interests acquired	100.00%
Transaction costs related to acquisition		8		432
Cash and cash equivalents	$ 11,437
Accounts receivable	4,129
Inventory	3,329
Other assets, net	769
Property, plant and equipment	1,185
Right of use assets	2,735	2,735		2,735
Intangible assets	7,800	7,800		7,800
Goodwill	6,629
Current liabilities	(7,354)
Lease liabilities	(2,739)
Net deferred income tax liabilities	(1,755)
Net purchase price	$ 26,165
Reduction of Goodwill owing to measurement period adjustments		77
Revenues		6,418		18,833
Distributed Earnings		$ (62)		$ 1,110
Pro forma Condensed Combined Financial Information
Diluted earnings per share (in dollars per share)		$ 0.42	$ 0.51	$ 1.21	$ 1.35
Revenues		$ 94,653	$ 104,277	$ 278,858	$ 306,191
Net income		$ 3,976	$ 4,805	$ 11,569	$ 12,762
Earnings per share - basic		$ 0.42	$ 0.51	$ 1.22	$ 1.36
Earnings per share - diluted		$ 0.42	$ 0.51	$ 1.21	$ 1.35
Dynamic Controls \| Customer lists
ACQUISITIONS
Intangible assets		$ 4,400		$ 4,400
Amortization period (in years)	16 years
Dynamic Controls \| Technology
ACQUISITIONS
Intangible assets		1,900		1,900
Amortization period (in years)	13 years
Dynamic Controls \| Trade name
ACQUISITIONS
Intangible assets		$ 1,500		$ 1,500
Amortization period (in years)	18 years