NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	1 Months Ended	3 Months Ended		6 Months Ended
	Feb. 28, 2017 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($) shares	Jun. 30, 2018 USD ($) segment	Jun. 30, 2017 USD ($) segment shares	Dec. 31, 2017 USD ($)	Nov. 30, 2017 USD ($)
Deferred financing fees		$ 16,800,000		$ 16,800,000		$ 17,700,000
Amortization of deferred financing fees		800,000	$ 500,000	1,452,000	$ 793,000
Deferred finance charges	$ 14,200,000						$ 4,800,000
Expensed unamortized deferred financing fees	$ 3,900,000
Purchase price paid in common stock (in value)		15,355,000	3,438,000	$ 15,355,000	3,438,000
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of year					(52,000)
Change in fair value					$ 52,000
Number of operating segments | segment				16	10
Number of reportable segments | segment				2	2
Dilutive effect		0	$ 0	$ 0	$ 0
Assets held for sale		$ 14,134,000		$ 14,134,000		9,907,000
Number of months within which the Company expects to sell assets held for sale				12 months
Series A
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Preferred stock dividend rate (as a percent)		7.625%	7.625%	7.625%	7.625%
Series B
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Diluted earnings per share as their effects were anti-dilutive | shares			0		0
Flatbed
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Assets held for sale		$ 10,200,000		$ 10,200,000		7,000,000
Specialized
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Assets held for sale		$ 3,900,000		$ 3,900,000		$ 2,900,000