SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Mar. 31, 2022	Jan. 01, 2022	Dec. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total shareholders' equity	$ 350,486	$ 340,848		$ 447,992	$ 420,368	$ 395,443	$ 364,761
Assets:
Deferred income tax assets	130,174		$ 111,560	87,581
Liabilities:
Current portion of long-term debt	2,491		169,221	166,008
Long-term debt	813,252		564,220	478,151
Shareholders' equity:
Additional paid-in capital	1,162,714		1,133,044	1,242,794
Accumulated deficit	(546,211)		(527,347)	(571,794)
Accumulated Deficit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total shareholders' equity	$ (546,211)	$ (538,173)	44,400	(571,794)	$ (615,259)	$ (621,860)	$ (640,909)
Interest adjustment due to ASU 2020-06 adoption			60,800
Tax impacts due to ASU 2020-06 adoption			16,400
Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total shareholders' equity				(65,303)
Assets:
Deferred income tax assets			23,979
Liabilities:
Current portion of long-term debt			3,213
Long-term debt			86,069
Shareholders' equity:
Additional paid-in capital			(109,750)
Accumulated deficit			$ 44,447
Cumulative Effect, Period of Adoption, Adjustment | Accumulated Deficit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total shareholders' equity				$ 44,447