STOCK-BASED COMPENSATION - Narrative (Details) - USD ($)			12 Months Ended
	Mar. 01, 2019	Feb. 13, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized			$ 19,100,000	$ 10,400,000	$ 8,300,000
Share-based payment arrangement, expense, tax benefit			2,400,000	2,400,000	3,200,000
Excess tax benefit			100,000	200,000	1,400,000
Unrecognized compensation cost			$ 10,700,000
Weighted-average recognition period (years)			1 year 6 months
Award vesting period (years)			3 years
Total intrinsic value of stock options exercised			$ 200,000	$ 200,000	$ 100,000
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (years)	3 years
Granted (in shares)	300,000		474,000
Percentage of plan that vest in relation to time (percent)	60.00%
Percentage of plan that vests based on performance (percent)	40.00%
Vesting percentage of target number of performance stock units granted (percent)	200.00%
Weighted-average grant date fair value per share (in dollars per share)			$ 46.26	$ 49.94	$ 76.30
Fair value of restricted stock units vested			$ 6,800,000	$ 800,000	$ 800,000
Restricted Stock Units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (years)			1 year
Weighted-average grant date fair value per share (in dollars per share)			$ 39.60
Restricted Stock Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (years)			3 years
Weighted-average grant date fair value per share (in dollars per share)			$ 48.75
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (years)			3 years
Granted (in shares)			0
Percentage of plan that vest in relation to time (percent)			60.00%
Percentage of plan that vests based on performance (percent)			40.00%
Weighted-average grant date fair value per share (in dollars per share)			$ 0	$ 61.97	$ 60.24
Fair value of restricted stock units vested			$ 6,200,000	$ 4,900,000	$ 4,900,000
Restricted Stock Awards | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value per share (in dollars per share)				$ 48.14	$ 44.96
Restricted Stock Awards | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value per share (in dollars per share)				$ 52.81	$ 51.31
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized			$ 0	$ 0	$ 0
Stock option grants (in shares)			0	0	0
Stock options outstanding (shares)				13,000
Stock options outstanding, weighted average exercise price (in dollars per share)				$ 17.23
Total intrinsic value of stock options exercised			$ 300,000	$ 300,000	$ 300,000
Aggregate intrinsic value of outstanding and exercisable stock options				$ 200,000	$ 1,300,000
U.S. Concrete, Inc. Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares remaining for future issuance (less than) (in shares)			500,000
Common Stock | U.S. Concrete, Inc. Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional capital shares reserved for future issuance (in shares)		900,000