RELATED PERSON TRANSACTIONS - Transactions With Our Controlling Shareholders (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related person transactions
Capital lease payable, interest	$ (17,216)
Leased assets or facilities \| Entities owned by the controlling shareholders
Related person transactions
Amount paid	5,000	$ 5,100	$ 5,100
Capital Leases \| Entities owned by the controlling shareholders
Related person transactions
Capital leases payable, net of interest	12,500	14,200
Capital lease payable, interest	(3,600)	(4,900)
Charter Aircraft \| Controlling shareholders
Related person transactions
Aircraft expense	$ 1,700	$ 1,900	$ 1,400

Represents the amount paid for transactions to related party during the financial reporting period.

No definition available.

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- Definition

Amount necessary to reduce net minimum lease payments to present value for capital leases.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737

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- Definition

Carrying amount as of the balance sheet date of obligations due all related parties.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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