STOCKHOLDERS' EQUITY (Details) $ / shares in Units, $ in Millions									3 Months Ended												12 Months Ended
	Aug. 01, 2018 USD ($) shares	Jul. 01, 2018 USD ($) shares	Jun. 06, 2018 USD ($) shares	Jun. 01, 2018 $ / shares shares	Feb. 20, 2018 USD ($)	Feb. 16, 2018 shares	Feb. 14, 2018 $ / shares shares	Feb. 27, 2017 USD ($) shares	Dec. 31, 2020 Vote $ / shares shares	Sep. 30, 2020 $ / shares	Jun. 30, 2020 $ / shares	Mar. 31, 2020 $ / shares	Dec. 31, 2019 $ / shares	Sep. 30, 2019 $ / shares	Jun. 30, 2019 $ / shares	Mar. 31, 2019 $ / shares	Dec. 31, 2018 USD ($) $ / shares	Sep. 30, 2018 $ / shares	Jun. 30, 2018 $ / shares	Mar. 31, 2018 $ / shares	Dec. 31, 2020 D Vote $ / shares shares	Dec. 31, 2019 $ / shares	Dec. 31, 2018 USD ($)	Dec. 23, 2020 shares
Number of votes for each common stock | Vote									1												1
Issuance of common stock (in shares)							7,500,000
Issuance of stock | $																							$ 104.5
Shares of common stock reserved for future issuance									0												0
Proceeds from issuance of common stock | $					$ 84.4																		84.4
Common stock, par value | $ / shares									$ 0.0001				$ 0.0001								$ 0.0001	$ 0.0001
Purchase price paid in common stock (in value) | $																	$ 19.7						$ 19.7
Don R Daseke
Minimum common stock to be repurchased (in shares)																								3,000,000
2017 Omnibus Incentive Plan
Shares of common stock reserved for future issuance									0												0
Warrants
Total number of warrants outstanding									35,040,656												35,040,656
Share issued for exercise of warrants (in shares)									17,520,328												17,520,328
Shares that can be purchased out of each warrant									0.50												0.50
Exercise price per half share (in dollars per share) | $ / shares																					$ 5.75
Exercise price per whole share (in dollars per share) | $ / shares									$ 11.50												$ 11.50
Number of fractional shares to be issued																					0
Public Warrants
Total number of warrants outstanding									19,959,902												19,959,902
Redemption price per warrant | $ / shares																					$ 0.01
Redemption price per warrant subject to stated common stock value | $ / shares																					$ 24.00
Number of trading days in which the price per share should equals or exceeds $24.00 per share to call the Public Warrants for redemption | D																					20
Warrants exercisable period																					30 days
Private Placement Warrants
Total number of warrants outstanding									15,080,756												15,080,756
Aveda
Purchase price paid in common stock (in shares)			1,612,979
Purchase price paid in common stock (in value) | $			$ 15.4
Kelsey Trail
Purchase price paid in common stock (in shares)		95,859
Purchase price paid in common stock (in value) | $		$ 0.9
Builders
Purchase price paid in common stock (in shares)	399,530
Purchase price paid in common stock (in value) | $	$ 3.4
Selling Stockholders
Selling price to public | $ / shares							$ 10.60
Underwriting agreement
Issuance of common stock (in shares)						1,125,000
Duration to purchase additional shares							30 days
Series A
Preferred stock, par value | $ / shares									$ 0.0001												$ 0.0001
Number of shares of the company's stock issued upon initial conversion									8.6957												8.6957
Initial conversion rate per share (in dollars per share) | $ / shares									$ 11.50												$ 11.50
Number of years of anniversary from issue date for holder elects to convert (in years)																					7 years
Number of consecutive trading days at option by delivery of Notice of Conversion (in days)																					10 days
Number of consecutive trading days commencing on trading day immediately following notice (in days)																					20 days
Shares would be issuable upon conversion of currently outstanding shares (in shares)																					5,652,173
Minimum percentage of weighted average price of common stock under preferred stock conversion on or after third anniversary (as a percent)																					140.00%
Minimum trading days of weighted average price of common stock under preferred stock conversion on or after third anniversary (in days)																					20 days
Maximum trading days of weighted average price of common stock under preferred stock conversion on or after third anniversary (in days)																					30 days
Minimum percentage of weighted average price of common stock under preferred stock conversion on or after fifth anniversary (as a percent)																					115.00%
Minimum trading days of weighted average price of common stock under preferred stock conversion on or after fifth anniversary (in days)																					20 days
Maximum trading days of weighted average price of common stock under preferred stock conversion on or after fifth anniversary (in days)																					30 days
Minimum trading days of weighted average price of common stock under preferred stock conversion on or after seventh anniversary (in days)																					10 days
Maximum days for conversion of preferred stock into common stock due to fundamental changes (in days)																					15 days
Base price for calculation of conversion rate | $ / shares																					$ 100.00
Percentage of closing sale price of common stock									66.67%												66.67%
Minimum percentage of shares of common stock owned by holder for limitation in preferred stock																					9.99%
Maximum percentage of shares can be converted to common stock																					19.99%
Preferred share liquidation amount per share | $ / shares									$ 100												$ 100
Dividend rate (as a percent)																					7.625%	7.625%	7.625%
Dividend paid (in dollars per share) | $ / shares									$ 1.91	$ 1.91	$ 1.91	$ 1.91	$ 1.91	$ 1.91	$ 1.91	$ 1.91	$ 1.91	$ 1.91	$ 1.91	$ 1.91
Series A | Maximum
Number of business days following tenth consecutive trading day to convert shares (in days)																					5 days
Number of trading days from receipt of Notice of Conversion (in days)																					2 days
Series A | Hennessy Capital Acquisition Corp II and HCAC Merger Sub Inc
Preferred stock, issued (in shares)								650,000
Proceeds from convertible preferred stock | $								$ 65.0
Earn out provision | Hennessy Capital Acquisition Corp II and HCAC Merger Sub Inc
Common stock, par value | $ / shares				$ 0.0001
Purchase price paid in common stock (in shares)				5,000,000