Revenue (Tables)

3 Months Ended

Sep. 30, 2019

Revenue From Contract With Customer [Abstract]

Summary of Contract with Customer, Asset and Liability

Changes in the contract assets and contract liabilities are as follows:

	September 30, 2019		June 30, 2019
(Dollars in thousands)	Amount		Amount
Contract Assets:
Unbilled accounts receivable – current (1)	$	7,643	$	5,260
Interest receivable – current (2)		584		361
Long-term accounts receivable (2)		3,081		4,116
Interest receivable – non-current (2)		1,079		1,255
Contract Liabilities:
Customer advances		18,413		20,395
Deferred revenue – current		79,596		78,332
Deferred revenue – non-current		26,273		26,639

(1) Included in accounts receivable on consolidated balance sheets

(2) Included in prepaid expenses and other current assets on consolidated balance sheets

(3) Included in other assets on consolidated balance sheets

Summary of Changes In Deferred Revenue From Contracts With Customers

Changes in deferred revenue from contracts with customers are as follows:

	Three Months Ended
(Dollars in thousands)	September 30, 2019			June 30, 2019
Balance at beginning of period	$	104,971		$	102,124
New billings		90,475			120,263
Recognition of deferred revenue from opening balance		(11,191	)		(22,619	)
Recognition of new additions		(78,386	)		(94,797	)
Balance at end of period	$	105,869		$	104,971

Schedule of Remaining Performance Obligations related to Warranty

The following table represents the Company's remaining performance obligations related to long-term warranty and service as of September 30, 2019 and the estimated revenue expected to be recognized:

	Fiscal years of revenue recognition
(Dollars in thousands)	2020		2021		2022		Thereafter
Long-term warranty and service	$	28,619	$	26,649	$	14,714	$	12,332