Discontinued Operations (Tables)

12 Months Ended

Sep. 30, 2019

Discontinued Operations and Disposal Groups [Abstract]

Schedule of discontinued operations

	Year Ended September 30,
	2019		2018		2017
Revenue
Products	$	76,227	$	150,365	$	126,638
Services		33,291		45,731		38,748
Total revenue		109,518		196,096		165,386
Cost of revenue
Products		47,148		85,350		73,714
Services		19,016		22,834		22,400
Total cost of revenue		66,164		108,184		96,114
Gross profit		43,354		87,912		69,272
Operating expenses
Research and development		6,605		7,605		6,860
Selling, general and administrative		20,889		25,017		12,536
Restructuring charges		24		2		82
Total operating expenses		27,518		32,624		19,478
Operating income		15,836		55,288		49,794
Other income, net		539,948		1,091		1,057
Income before income taxes and earnings of equity method investment		555,784		56,379		50,851
Income tax provision		134,110		14,420		8,760
Income before equity in earnings of equity method investment		421,674		41,959		42,091
Equity in earnings of equity method investment		6,188		6,788		9,834
Net income	$	427,862	$	48,747	$	51,925

	Year Ended September 30,
	2019		2018		2017
Depreciation and amortization	$	4	$	743	$	919
Capital expenditures		666		302		1,049
Stock-based compensation		635		966		705
Earnings of equity method investment		(6,188)		(6,788)		(9,834)

	September 30,
	2018
Assets
Accounts receivable, net	$	27,852
Inventories		37,953
Other current assets		343
Total current assets of discontinued operation	$	66,148
Property, plant and equipment, net	$	1,081
Goodwill		26,485
Intangibles, net		14
Equity method investment		31,472
Total long-term assets of discontinued operation	$	59,052
Liabilities
Accounts payable	$	11,149
Deferred revenue		1,052
Accrued warranty and retrofit costs		2,464
Other current liabilities		3,872
Total current liabilities of discontinued operation	$	18,537
Long-term liabilities of discontinued operation	$	698

Schedule of unconsolidated subsidiaries accounted for based on the equity method

	September 30,
	2018
Balance Sheets:
Current assets	$	69,302
Non-current assets		21,338
Current liabilities		26,006
Non-current liabilities		8,397

	Year Ended September 30,
	2019		2018		2017
Statements of Operations:
Total revenue	$	88,357	$	94,652	$	104,667
Gross profit		35,127		34,982		41,241
Operating Income		17,791		18,405		26,340
Net income		12,483		13,345		19,451