CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Current assets
Cash and cash equivalents	$ 137,217	$ 197,708
Marketable securities	47	46,281
Accounts receivable, net	163,653	125,192
Inventories	108,512	96,986
Prepaid expenses and other current assets	35,056	31,741
Current assets held for sale	65,005	66,148
Total current assets	509,490	564,056
Property, plant and equipment, net	97,939	59,988
Long-term marketable securities	2,795	7,237
Long-term deferred tax assets	28,012	43,798
Goodwill	492,526	255,876
Intangible assets, net	270,793	99,956
Other assets	23,250	5,294
Non-current assets held for sale	63,072	59,052
Total assets	1,487,877	1,095,257
Current liabilities
Current portion of long term debt	8,114	2,000
Accounts payable	56,934	55,873
Deferred revenue	31,200	25,884
Accrued warranty and retrofit costs	7,202	6,340
Accrued compensation and benefits	24,129	29,322
Accrued restructuring costs	586	659
Accrued income taxes payable	7,276	6,746
Accrued expenses and other current liabilities	36,294	30,405
Current liabilities held for sale	6,595	7,388
Total current liabilities	178,330	164,617
Long-term debt	535,384	194,071
Long-term tax reserves	15,037	1,102
Long-term deferred tax liabilities	15,978	7,135
Long-term pension liabilities	4,717	4,255
Other long-term liabilities	7,997	5,547
Non-current liabilities held for sale	523	698
Total liabilities	757,966	377,425
Commitments and contingencies (Note 16)
Stockholders' Equity
Preferred stock, $0.01 par value - 1,000,000 shares authorized, no shares issued or outstanding
Common stock, $0.01 par value - 125,000,000 shares authorized, 85,593,182 shares issued and 72,131,313 shares outstanding at March 31, 2019, 84,164,130 shares issued and 70,702,261 shares outstanding at September 30, 2018	856	841
Additional paid-in capital	1,909,684	1,898,434
Accumulated other comprehensive income	11,852	13,587
Treasury stock, at cost- 13,461,869 shares	(200,956)	(200,956)
Accumulated deficit	(991,525)	(994,074)
Total stockholders' equity	729,911	717,832
Total liabilities and stockholders' equity	$ 1,487,877	$ 1,095,257