Defined Benefit Pension Plan - Amounts recognized (Details) - USD ($)	Jun. 30, 2019	Jun. 30, 2018
Defined Benefit Pension Plan
Pension (liability) asset	$ (830,862)	$ 237,930
Amounts recognized in accumulated other comprehensive loss consist of:
Accumulated pension actuarial loss, net of income tax benefit of $1,522,485 and $1,522,485, respectively	2,506,295	1,285,024
Accumulated pension actuarial loss, net of income tax benefit	$ 1,522,485	$ 1,522,485

Amount, after tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (j)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

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