Discontinued Operations - Unconsolidated Subsidiaries - Statements of Operations (Details) - ULVAC Cryogenics, Inc. $ in Thousands	3 Months Ended
Dec. 31, 2018 USD ($)
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]
Total revenue	$ 22,299
Gross profit	8,928
Operating Income	5,124
Net income	$ 3,496

The amount of gross profit (loss) reported by an equity method investment of the entity.

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Amount of income (loss) from continuing operations reported by an equity method investee.

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Amount of revenue from sale of product and rendering of service reported by equity method investee.

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