Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Allowance for bad debts	$ 2,930	$ 1,053
Payables to related parties	2,878	1,329
Current portion of long-term debt, discount	1,397	1,341
Long-term debt, discount	1,745	2,485
Payable pursuant to tax receivable agreements, related parties	$ 20,579	$ 23,797
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000	10,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Shares of Class A Common Stock
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	400,000,000	400,000,000
Common stock, shares issued (in shares)	84,853,084	81,885,384
Common stock, shares outstanding (in shares)	84,853,084	81,885,384
Shares of Class B Common Stock
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	400,000,000	400,000,000
Common stock, shares issued (in shares)	28,080,525	30,638,960
Common stock, shares outstanding (in shares)	28,080,525	30,638,960