Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Net income	$ 8,717	$ 6,502	$ 19,715	$ 12,124
Other comprehensive income (loss):
Available-for-sale securities, Pre-tax	(9)	0	(32)	0
Available-for-sale securities, Tax	4	0	13	0
Available-for-sale securities, Net of Tax	(5)	0	(19)	0
Postemployment severance actuarial change, Pre-tax	207	49	450	283
Postemployment severance actuarial change, Tax	(81)	(19)	(175)	(110)
Postemployment severance actuarial change, Net of Tax	126	30	275	173
Reclassification to (earnings) loss:
Amortization of actuarial change, Pre-tax	(143)	(105)	(288)	(219)
Amortization of actuarial change, Tax	56	41	112	85
Amortization of actuarial change, Net of Tax	(87)	(64)	(176)	(134)
Other comprehensive income (loss), Pre-tax	55	(56)	130	64
Other comprehensive income (loss), Tax	(21)	22	(50)	(25)
Other comprehensive income (loss), Net of Tax	34	(34)	80	39
Total comprehensive income	$ 8,751	$ 6,468	$ 19,795	$ 12,163