CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net income (loss)	$ 33,531	$ (76)
OTHER COMPREHENSIVE INCOME (LOSS)
Unrealized holding gains (losses) on investment securities not reflected in net income, net of deferred income tax expense (benefit) of $5,468 and $(5,042)	20,568	(18,969)
Reclassification adjustment for net realized investment (gains) losses included in net income (loss), net of income tax (expense) benefit of $57 and $51	215	193
Reclassification adjustment for amounts amortized into net periodic pension and postretirement benefit income, net of deferred income tax expense of $(84) and $(144):
Net actuarial loss	197	81
Prior service credit	(510)	(622)
Total reclassification adjustment associated with affiliate's pension and postretirement benefit plans	(313)	(541)
Other comprehensive income (loss)	20,470	(19,317)
Total comprehensive income (loss)	$ 54,001	$ (19,393)