SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Schedule of Depreciation Expense on Property And Equipment

Depreciation expense for property and equipment is reflected in the following table:

	Property And Equipment
	Years Ended December 31,
	2019		2018		2017
	(amounts in thousands)
Depreciation expense	$	31,866	$	28,709	$	13,215

Schedule of Property And Equipment By Category

The following is a summary of the categories of property and equipment along with the range of estimated useful lives used for depreciation purposes:

	Depreciation Period				Property And Equipment
	In Years				December 31,
	From		To		2019		2018
Land, land easements and land improvements	0		15		$	107,281	$	110,570
Buildings	20		40		34,777		36,038
Equipment	3		40		210,872		222,847
Furniture and fixtures	5		10		19,393		18,426
Other		*		*	44		44
Leasehold improvements		*		*	98,833		71,688
					471,200		459,613
Accumulated depreciation					(163,416)		(158,341)
					307,784		301,272
Capital improvements in progress					42,882		15,758
Net property and equipment					$	350,666	$	317,030

* Shorter of economic life or lease term

Contract Assets and Liabilities

The following table presents the amounts of unearned revenues as of the periods indicated:

		Unearned Revenues
		December 31,
	Balance Sheet Location	2019		2018
		(amounts in thousands)
Current	Other current liabilities	$	9,894	$	22,692
Long-term	Other long-term liabilities	$	2,113	$	1,138

	December 31,
Description	2019		2018
	(amounts in thousands)
Receivables, included in “Accounts receivable net of allowance for doubtful accounts”	$	376,504	$	330,983
Unearned revenue - current	9,894		22,692
Unearned revenue - noncurrent	2,113		1,138

Schedule of Change in Asset Retirement Obligation

The following table presents the changes in asset retirement obligations:

	Asset Retirement Obligations
	December 31,
	2019		2018
	(amounts in thousands)
Beginning Balance	$	2,030	$	1,714
Additions	—		456
Settlements	(20)		(204)
Revision of estimate	—		4
Accretions	64		60
Ending Balance	$	2,074	$	2,030
Asset retirement obligations - short term	$	380	$	342
Asset retirement obligations - long term	1,694		1,688
Total asset retirement obligations	$	2,074	$	2,030