CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net Income	$ 21,262	$ 40,514
OTHER COMPREHENSIVE INCOME, NET OF TAX
Derivative instruments net unrealized gain, net of tax expense of $83 and $86	252	262
Pension and other postretirement benefit activity, net of tax expense $296 and $336	901	1,022
Total other comprehensive income (loss)	1,153	1,284
COMPREHENSIVE INCOME	22,415	41,798
Less: Comprehensive income attributable to noncontrolling interests	4,306	4,873
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 18,109	$ 36,925