CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net income (loss)	$ 500,106	$ (35,063)
Other comprehensive income (loss), net of income taxes:
Unrealized appreciation (depreciation) on securities, net of income taxes of $0.2 million at December 31, 2017 and ($7.8) million at December 31, 2016	(601)	12,412
Minimum pension liability adjustments, net of income taxes of ($0.1) million at December 31, 2017 and ($0.2) million at December 31, 2016	340	366
Other comprehensive income (loss)	(261)	12,778
Comprehensive income (loss)	$ 499,845	$ (22,285)