CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Non-controlling Interest	Total
Balance at beginning of year at Dec. 31, 2018	$ 271		$ 164,086	$ 35,507	$ (1,414)	$ 142,428	$ 340,878
Balance at beginning of year (in shares) at Dec. 31, 2018	27,091,000	19,627,000			91,000
Changes in Stockholders' Equity
Exchange of Solaris LLC Units and shares of Class B common stock for shares of Class A common stock	$ 32		24,925			(24,957)
Exchange of Solaris LLC Units and shares of Class B common stock for shares of Class A common stock (in shares)	3,245,000	(3,245,000)
Net effect of deferred tax asset and payables related to parties pursuant to Tax Receivable Agreement from the exchange of Solaris LLC Units and shares of Class B common stock for shares of Class A common stock			(1,895)				(1,895)
Stock option exercises	$ 1		601		$ (427)	(336)	(161)
Stock option exercises (in shares)	65,000				28,000
Stock-based compensation			553			346	899
Vesting of restricted stock			2		$ (4)	(2)	(4)
Solaris LLC distribution paid to Solaris LLC unitholders						(1,638)	(1,638)
Dividends paid Class A common stock				(3,119)			(3,119)
Net (loss) income				12,317		11,118	23,435
Balance at end of year at Mar. 31, 2019	$ 304		188,458	44,173	$ (1,845)	126,773	357,863
Balance at end of year (in shares) at Mar. 31, 2019	30,401,000	16,382,000			119,000
Balance at beginning of year at Dec. 31, 2018	$ 271		164,086	35,507	$ (1,414)	142,428	$ 340,878
Balance at beginning of year (in shares) at Dec. 31, 2018	27,091,000	19,627,000			91,000
Changes in Stockholders' Equity
Treasury stock retirements (in shares)							0
Net (loss) income							$ 45,944
Balance at end of year at Jun. 30, 2019	$ 309		192,734	54,284	$ (2,144)	131,000	376,183
Balance at end of year (in shares) at Jun. 30, 2019	30,905,000	15,940,000			135,000
Changes in Stockholders' Equity
Effect of ASU No. 2016-02 implementation			186	(532)		(186)	(532)
Balance at beginning of year at Mar. 31, 2019	$ 304		188,458	44,173	$ (1,845)	126,773	357,863
Balance at beginning of year (in shares) at Mar. 31, 2019	30,401,000	16,382,000			119,000
Changes in Stockholders' Equity
Exchange of Solaris LLC Units and shares of Class B common stock for shares of Class A common stock	$ 4		3,571			(3,575)
Exchange of Solaris LLC Units and shares of Class B common stock for shares of Class A common stock (in shares)	442,000	(442,000)
Net effect of deferred tax asset and payables related to parties pursuant to Tax Receivable Agreement from the exchange of Solaris LLC Units and shares of Class B common stock for shares of Class A common stock			(397)				(397)
Stock option exercises			48			(20)	28
Stock option exercises (in shares)	11,000
Stock-based compensation			809			428	1,237
Vesting of restricted stock	$ 1		245		$ (299)	(246)	(299)
Vesting of restricted stock (in shares)	51,000				16,000
Solaris LLC distribution paid to Solaris LLC unitholders						(1,594)	(1,594)
Dividends paid Class A common stock				(3,164)			$ (3,164)
Treasury stock retirements (in shares)							0
Net (loss) income				13,275		9,234	$ 22,509
Balance at end of year at Jun. 30, 2019	$ 309		192,734	54,284	$ (2,144)	131,000	376,183
Balance at end of year (in shares) at Jun. 30, 2019	30,905,000	15,940,000			135,000
Balance at beginning of year at Dec. 31, 2019	$ 308		191,843	74,222	$ (2,526)	145,811	409,658
Balance at beginning of year (in shares) at Dec. 31, 2019	30,765,000	15,940,000			163,000
Changes in Stockholders' Equity
Exchange of Solaris LLC Units and shares of Class B common stock for shares of Class A common stock	$ 1		460			(461)
Exchange of Solaris LLC Units and shares of Class B common stock for shares of Class A common stock (in shares)	50,000	(50,000)
Net effect of deferred tax asset and payables related to parties pursuant to Tax Receivable Agreement from the exchange of Solaris LLC Units and shares of Class B common stock for shares of Class A common stock			(303)				(303)
Stock option exercises			66		$ (80)	(11)	(25)
Stock option exercises (in shares)	9,000				7,000
Share and unit repurchases and retirements	$ (24)		(14,804)	(10,177)		(1,711)	(26,716)
Share and unit repurchases and retirements (in shares)	(2,374,000)
Stock-based compensation			907			492	1,399
Vesting of restricted stock	$ 1		471		$ (373)	(473)	(374)
Vesting of restricted stock (in shares)	105,000				37,000
Solaris LLC distribution paid to Solaris LLC unitholders						(1,668)	(1,668)
Dividends paid Class A common stock				(3,087)			(3,087)
Treasury stock retirements			(1,247)	(1,732)	$ 2,979
Treasury stock retirements (in shares)					(207,000)
Net (loss) income				(19,081)		(14,071)	(33,152)
Balance at end of year at Mar. 31, 2020	$ 286		177,393	40,145		127,908	345,732
Balance at end of year (in shares) at Mar. 31, 2020	28,555,000	15,890,000
Balance at beginning of year at Dec. 31, 2019	$ 308		191,843	74,222	$ (2,526)	145,811	$ 409,658
Balance at beginning of year (in shares) at Dec. 31, 2019	30,765,000	15,940,000			163,000
Changes in Stockholders' Equity
Treasury stock retirements (in shares)							(207,382)
Net (loss) income							$ (42,649)
Balance at end of year at Jun. 30, 2020	$ 287		178,511	31,516		122,166	332,480
Balance at end of year (in shares) at Jun. 30, 2020	28,673,000	15,840,000
Balance at beginning of year at Mar. 31, 2020	$ 286		177,393	40,145		127,908	345,732
Balance at beginning of year (in shares) at Mar. 31, 2020	28,555,000	15,890,000
Changes in Stockholders' Equity
Exchange of Solaris LLC Units and shares of Class B common stock for shares of Class A common stock	$ 1		395			(395)	1
Exchange of Solaris LLC Units and shares of Class B common stock for shares of Class A common stock (in shares)	50,000	(50,000)
Net effect of deferred tax asset and payables related to parties pursuant to Tax Receivable Agreement from the exchange of Solaris LLC Units and shares of Class B common stock for shares of Class A common stock			(310)				(310)
Stock option exercises			36			(16)	20
Stock option exercises (in shares)	7,000
Stock-based compensation			895			497	1,392
Vesting of restricted stock			171			(171)
Vesting of restricted stock (in shares)	80,000
Cancelled shares withheld for taxes from RSU vesting			(69)			(38)	(107)
Cancelled shares withheld for taxes from RSU vesting (in shares)	(19,000)
Solaris LLC distribution paid to Solaris LLC unitholders						(1,663)	(1,663)
Dividends paid Class A common stock				(3,089)			(3,089)
Net (loss) income				(5,540)		(3,956)	(9,496)
Balance at end of year at Jun. 30, 2020	$ 287		$ 178,511	$ 31,516		$ 122,166	$ 332,480
Balance at end of year (in shares) at Jun. 30, 2020	28,673,000	15,840,000