Consolidated Statements of Changes in Stockholders' Equity (Deficit) / Members' Equity (Deficit) - USD ($) shares in Thousands, $ in Thousands	Class A Common Stock Common Stock	Class B Common Stock Common Stock	Members interest	Preferred Stock	Additional paid-in capital	Accumulated Deficit	Accumulated other comprehensive income	Noncontrolling interests in subsidiaries	Total
Members equity, Beginning Balance at Dec. 31, 2018			$ 113,274			$ (13,371)		$ 2,865	$ 102,768
Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Issuance of members' interest, net of offering costs of $837			19,163						19,163
Redemption of members' interest			(2,112)			(1,601)			(3,713)
Distributions to members						(250,000)			(250,000)
Equity-based compensation			5,223						5,223
Members equity, Ending Balance at Mar. 31, 2019			135,548			(270,773)		3,213	(132,012)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Net income (loss)						(5,801)		348	(5,453)
Members equity, Beginning Balance at Dec. 31, 2018			113,274			(13,371)		2,865	102,768
Members equity, Ending Balance at Jun. 30, 2019			135,731			(272,856)		2,236	(134,889)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Net income (loss)									$ (7,175)
Effects of the DFB Merger:
Stock Issued During Period, Shares, New Issues									1,000
Members equity, Beginning Balance at Mar. 31, 2019			135,548			(270,773)		3,213	$ (132,012)
Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Equity-based compensation			183						183
Distributions to noncontrolling interest								(1,338)	(1,338)
Members equity, Ending Balance at Jun. 30, 2019			$ 135,731			(272,856)		2,236	(134,889)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Distributions to noncontrolling interest								(1,338)	(1,338)
Net income (loss)						(2,083)		361	(1,722)
Balance at beginning of period at Dec. 31, 2019	$ 4	$ 3			$ 11,252	(27,210)	$ 1,431	(14,729)	(29,249)
Shares, Outstanding, Beginning Balance at Dec. 31, 2019	40,816	31,564
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Issuance of common stock for acquisitions					6,248				6,248
Issuance of common stock for acquisitions (in shares)	387
Exchange of Class B Common Stock to Class A Common Stock					(361)			361
Exchange of Class B Common Stock to Class A Common Stock (in shares)	1,000	(1,000)
Cashless exercise of warrants (in shares)	1,092
Equity-based compensation					2,223				2,223
Equity-based compensation (in shares)	59
Net income (loss)						(158)		424	266
Equity activity resulting from Tax Receivable Agreement					2,482				2,482
Change in fair value of interest rate swaps, net of reclassification adjustment							(6,570)	(4,847)	(11,417)
Balance at end of period at Mar. 31, 2020	$ 4	$ 3			21,844	(27,368)	(5,139)	(18,791)	(29,447)
Shares, Outstanding, Ending Balance at Mar. 31, 2020	43,354	30,564
Balance at beginning of period at Dec. 31, 2019	$ 4	$ 3			11,252	(27,210)	1,431	(14,729)	$ (29,249)
Shares, Outstanding, Beginning Balance at Dec. 31, 2019	40,816	31,564
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Cashless exercise of warrants (in shares)									1,100
Net income (loss)									$ 7,435
Balance at end of period at Jun. 30, 2020	$ 3	$ 3		$ 1	37,614	(23,335)	(5,795)	(15,285)	(6,794)
Shares, Outstanding, Ending Balance at Jun. 30, 2020	30,665	28,509		158
Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Distributions to noncontrolling interest								(800)	(800)
Balance at beginning of period at Mar. 31, 2020	$ 4	$ 3			21,844	(27,368)	(5,139)	(18,791)	(29,447)
Shares, Outstanding, Beginning Balance at Mar. 31, 2020	43,354	30,564
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Exchange of Class B Common Stock to Class A Common Stock					(1,580)			1,580
Exchange of Class B Common Stock to Class A Common Stock (in shares)	2,055	(2,055)
Exchange of Class A Common Stock for Series B-1 Preferred Stock	$ (2)			$ 1	1
Exchange of Class A Common Stock for Series B-1 Preferred Stock (in shares)	(15,810)			158
Distributions to noncontrolling interest								(800)	(800)
Cashless exercise of warrants	$ 1				11,882				11,883
Cashless exercise of warrants (in shares)	1,034
Equity-based compensation					3,244				3,244
Equity-based compensation (in shares)	32
Net income (loss)						4,033		3,136	7,169
Equity activity resulting from Tax Receivable Agreement					2,223				2,223
Change in fair value of interest rate swaps, net of reclassification adjustment							(656)	(410)	(1,066)
Balance at end of period at Jun. 30, 2020	$ 3	$ 3		$ 1	$ 37,614	$ (23,335)	$ (5,795)	$ (15,285)	$ (6,794)
Shares, Outstanding, Ending Balance at Jun. 30, 2020	30,665	28,509		158