Note 10. Accumulated Other Comprehensive Income - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income at beginning of period	$ 1,976	$ 1,788	$ 1,937	$ 1,816
Other Comprehensive Income (Loss) before Reclassifications	211	145	315	179
Reclassification to (earnings) loss	(67)	(72)	(132)	(134)
Net current-period other comprehensive income (loss)	144	73	183	45
Accumulated Other Comprehensive Income at end of period	2,120	1,861	2,120	1,861
Unrealized Investment Gain (Loss)
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income at beginning of period	17	(50)	23	(31)
Other Comprehensive Income (Loss) before Reclassifications	(9)	30	(15)	11
Reclassification to (earnings) loss	0	0	0	0
Net current-period other comprehensive income (loss)	(9)	30	(15)	11
Accumulated Other Comprehensive Income at end of period	8	(20)	8	(20)
Postemployment Benefits, Net Actuarial Gain (Loss)
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income at beginning of period	1,959	1,840	1,914	1,854
Other Comprehensive Income (Loss) before Reclassifications	220	117	330	177
Reclassification to (earnings) loss	(67)	(76)	(132)	(150)
Net current-period other comprehensive income (loss)	153	41	198	27
Accumulated Other Comprehensive Income at end of period	2,112	1,881	2,112	1,881
Derivative Gain (Loss)
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income at beginning of period	0	(2)	0	(7)
Other Comprehensive Income (Loss) before Reclassifications	0	(2)	0	(9)
Reclassification to (earnings) loss	0	4	0	16
Net current-period other comprehensive income (loss)	0	2	0	7
Accumulated Other Comprehensive Income at end of period	$ 0	$ 0	$ 0	$ 0

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Amount after tax of reclassification adjustments of other comprehensive income (loss).

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