CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
Current assets
Cash and cash equivalents	$ 135,791	$ 197,708
Marketable securities	28	46,281
Accounts receivable, net	164,516	125,192
Inventories	110,070	96,986
Prepaid expenses and other current assets	42,063	31,741
Current assets held for sale	68,334	66,148
Total current assets	520,802	564,056
Property, plant and equipment, net	96,124	59,988
Long-term marketable securities	2,489	7,237
Long-term deferred tax assets	23,287	43,798
Goodwill	490,525	255,876
Intangible assets, net	279,233	99,956
Other assets	22,304	5,294
Non-current assets held for sale	61,967	59,052
Total assets	1,496,731	1,095,257
Current liabilities
Current portion of long term debt	9,527	2,000
Accounts payable	70,814	55,873
Deferred revenue	31,091	25,884
Accrued warranty and retrofit costs	6,851	6,340
Accrued compensation and benefits	20,799	29,322
Accrued restructuring costs	464	659
Accrued income taxes payable	6,131	6,746
Accrued expenses and other current liabilities	37,068	30,405
Current liabilities held for sale	8,335	7,388
Total current liabilities	191,080	164,617
Long-term debt	531,282	194,071
Long-term tax reserves	14,635	1,102
Long-term deferred tax liabilities	15,555	7,135
Long-term pension liabilities	4,499	4,255
Other long-term liabilities	8,979	5,547
Non-current liabilities held for sale	506	698
Total liabilities	766,536	377,425
Commitments and contingencies (Note 22)
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, 85,417,038 shares issued and 71,955,169 shares outstanding at December 31, 2018, 84,164,130 shares issued and 70,702,261 shares outstanding at September 30, 2018	854	841
Additional paid-in capital	1,902,888	1,898,434
Accumulated other comprehensive income	15,134	13,587
Treasury stock, at cost- 13,461,869 shares	(200,956)	(200,956)
Accumulated deficit	(987,725)	(994,074)
Total stockholders' equity	730,195	717,832
Total liabilities and stockholders' equity	$ 1,496,731	$ 1,095,257