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Intangible Assets - Intangible assets and estimated amortizable lives (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Jun. 30, 2018
Intangible assets
Gross Carrying Amount	$ 8,600,000		$ 8,600,000		$ 8,600,000
Accumulated Amortization	(8,171,000)		(8,171,000)		(7,867,000)
Net Balance	429,000		429,000		733,000
Amortization expense	67,000	$ 503,000	304,000	$ 1,007,000
Cost of revenue | Customer relationships - maintenance contracts
Intangible assets
Gross Carrying Amount	1,610,000		1,610,000		1,610,000
Accumulated Amortization	(1,181,000)		(1,181,000)		(1,047,000)
Net Balance	429,000		$ 429,000		$ 563,000
Life			6 years		6 years
Research and development | Developed technology
Intangible assets
Gross Carrying Amount	6,990,000		$ 6,990,000		$ 6,990,000
Accumulated Amortization	$ (6,990,000)		$ (6,990,000)		(6,820,000)
Net Balance					$ 170,000
Life			4 years		4 years

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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