Segment Reporting - Reconciliation of net loss to Adjusted EBITDA (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Reconciliation of net loss to Adjusted EBITDA
Net loss	$ (14,437)	$ (10,979)
Interest expense, net	4,610	2,693
Income tax benefit	(3,367)	(4,041)
Depreciation and amortization	9,913	6,299
Change in fair value of acquisition-related contingent consideration expense	700	1,176
Acquisition-related expense	251	3,691
Stock-based compensation expense	7,137	6,852
Adjusted EBITDA	$ 4,807	$ 5,691

Represents the amount of adjusted earnings before income tax, depreciation and amortization.

No definition available.

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- Definition

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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- Definition

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

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- Definition

The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the cost of borrowed funds accounted for as interest expense.

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount of noncash expense for share-based payment arrangement.

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