Nature of Operations and Summary of Significant Accounting Policies (Policies)	3 Months Ended
Sep. 30, 2019
Accounting Policies [Abstract]
Consolidation	The condensed consolidated financial statements include the accounts of JHA and all of its subsidiaries, which are wholly-owned, and all intercompany accounts and transactions have been eliminated.
Property, Plant and Equipment	Property and equipment is recorded at cost and depreciated using the straight-line method over the estimated useful lives of the assets.
Intangible Assets	Intangible assets consist of goodwill, customer relationships, computer software, and trade names acquired in business acquisitions in addition to internally developed computer software. The amounts are amortized, with the exception of those intangible assets with an indefinite life (such as goodwill), over an estimated economic benefit period, generally three to twenty years.
Common Stock	The Board of Directors has authorized the Company to repurchase shares of its common stock. Under this authorization, the Company may finance its share repurchases with available cash reserves or borrowings on its existing line-of-credit. The share repurchase program does not include specific price targets or timetables and may be suspended at any time.

Property and equipment is recorded at cost and depreciated using the straight-line method over the estimated useful lives of the assets.

The Board of Directors has authorized the Company to repurchase shares of its common stock. Under this authorization, the Company may finance its share repurchases with available cash reserves or borrowings on its existing line-of-credit. The share repurchase program does not include specific price targets or timetables and may be suspended at any time.