Represents the fair value of the contingent consideration recognized during the period.

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The amount of acquisition cost of a business combination allocated to accounts payable and other liabilities of the acquired entity.

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For contingent consideration arrangements after subsequent adjustment recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

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" Amount of liability after subsequent adjustments recognized arising from contingent consideration in a business combination."

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Amount of subsequent adjustment recognized arising from contingent consideration n a business combination.

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The period for which the seller eligible for getting earnout consideration.

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The percentage of additional earnout payment eligible by the seller based on unearned payment of original earnout targets.

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Amortization period of finite-lived intangible assets, goodwill acquired either individually or as part of a group of assets for the income tax purpose, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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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 consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

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Amount of liability recognized arising from contingent consideration in a business combination.

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This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within 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 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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Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at 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 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 income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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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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Acquisitions - Allocation of Purchase Price (Details) - USD ($) $ in Thousands			3 Months Ended										9 Months Ended	12 Months Ended
	May 01, 2017	Jul. 15, 2016	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Sep. 30, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2016
Acquisition
Payable to former shareholder																$ 5,487
Allocation of the purchase price paid to the fair value of the net assets for acquisition
Goodwill			$ 241,006				$ 241,006							$ 241,006	$ 241,006
Revenues			160,298	$ 141,869	$ 176,356	$ 93,187	151,825	$ 124,832	$ 163,446	$ 83,964				571,710	524,067	474,927
Pre-tax operating losses			14,062	$ 15,542	$ 33,773	$ (760)	19,748	$ 11,069	$ 28,080	$ (3,138)				62,617	55,759	52,915
Henderson
Allocation of the purchase price paid to the fair value of the net assets for acquisition
Earnout			$ (17)				(352)							(17)	(352)
Dejana
Acquisition
Adjusted fair value of earn out consideration																	$ 10,373
Subsequent adjustment											$ (600)	$ (1,186)		$ (200)	(900)	(1,786)	173
Maximum earnout																	$ 21,487
Earnout consideration amended period													2 years
Percentage of additional earnout payment			50.00%											50.00%
Contingent consideration in the form of an earnout capped		$ 26,000																$ 26,000
Fair value of the contingent consideration recognized		$ 10,200
Allocation of the purchase price paid to the fair value of the net assets for acquisition
Earnout			$ (2,000)				$ (2,200)							$ (2,000)	$ (2,200)
Arrowhead Equipment, Inc. [Member]
Acquisition
Total consideration	$ 7,385
Transactions expenses																343
Allocation of the purchase price paid to the fair value of the net assets for acquisition
Accounts receivable	852
Inventories	1,547
Prepaid and other current assets	6
Property and equipment	624
Goodwill	2,720
Intangible assets	2,700
Accounts payable and other current liabilities	(957)
Unfavorable lease	(107)
Total	$ 7,385
Amortization period of goodwill, for income tax purpose														15 years
Revenues since acquisition																7,964
Pre-tax operating income (losses) since acquisition																$ 607