INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Schedule of components of income tax expense (benefit)

The components of the provision for income taxes for the years ended December 31, 2017, 2016 and 2015 are as follows:

($ in thousands)	2017			2016			2015
Federal:
Current	$	(376	)	$	—		$	(1,092	)
Deferred	3,634			(29,082		)	(22,177		)
	3,258			(29,082		)	(23,269		)
State:
Current	74			—			(350		)
Deferred	(204		)	1,110			(1,769		)
	(130		)	1,110			(2,119		)
Total expense (benefit)	$	3,128		$	(27,972	)	$	(25,388	)

Schedule of effective income tax rate reconciliation

Reconciliation between the amounts determined by applying the federal statutory rate of 35% to income tax benefit is as follows:

($ in thousands)	2017			2016			2015
Tax at federal statutory rate	$	5,510		$	(28,392	)	$	(24,935	)
State taxes, net of federal benefit	176			(216		)	(885		)
Permanent differences	1,582			498			579
Stock-based compensation	(655		)	—			—
Valuation allowance	273			879			—
Effect of change in enacted Tax Act	(3,448		)	—			—
Other	(310		)	(741		)	(147		)
Total provision	$	3,128		$	(27,972	)	$	(25,388	)

Schedule of deferred tax assets and liabilities

The significant items giving rise to deferred tax assets (liabilities) at December 31, 2017 and 2016, respectively, are as follows:

($ in thousands)	2017			2016
Deferred Income Tax Assets
Accrued liabilities	$	1,264		$	334
Allowance for doubtful accounts	94			195
Goodwill and other intangible assets	5,304			10,953
Stock‑based compensation	2,960			1,692
Net operating losses	56,788			49,267
Other	69			389
Noncurrent deferred tax assets	66,479			62,830
Total deferred tax assets	66,479			62,830
Valuation allowance	(1,151		)	(879		)
Total deferred tax assets — net	65,328			61,951
Deferred Income Tax Liabilities
Property and equipment	(68,811		)	(60,958		)
Prepaid expenses	(965		)	(1,506		)
Other	(131		)	(635		)
Noncurrent deferred tax liabilities	(69,907		)	(63,099		)
Net deferred tax liability	$	(4,579	)	$	(1,148	)