Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 177.4	$ 112.2
Restricted cash	0.2	0.2
Accounts receivable, net	218.1	262.5
Inventories	232.0	205.8
Prepaid expenses and other current assets	65.0	40.1
Total current assets	692.7	620.8
Property, plant and equipment, net	520.5	510.2
Intangible assets, net	742.4	761.6
In-process research and development	41.0	50.0
Goodwill	268.3	259.7
Other assets	56.4	27.1
Total assets	2,321.3	2,229.4
Current liabilities:
Accounts payable	124.5	80.7
Accrued expenses	54.8	30.7
Contingent consideration, current portion	54.6	5.6
Accrued compensation	44.7	58.2
Debt, current portion	10.1	10.1
Other current liabilities	12.5	15.1
Total current liabilities	301.2	200.4
Contingent consideration	10.4	54.4
Non-current portion of debt	830.4	784.5
Deferred tax liability	65.6	67.5
Deferred revenue	77.0	62.5
Other liabilities	47.8	49.2
Total liabilities	1,332.4	1,218.5
Commitments and contingencies (Notes 8 & 16)
Stockholders' equity:
Preferred stock, $0.001 par value; 15.0 shares authorized, no shares issued or outstanding at both 2019 and 2018	0.0	0.0
Common stock, $0.001 par value; 200.0 shares authorized, 52.7 shares issued and 51.6 shares outstanding at 2019; 52.4 shares issued and 51.2 shares outstanding at 2018	0.1	0.1
Treasury stock, at cost, 1.2 common shares at both 2019 and 2018	(39.7)	(39.6)
Additional paid-in capital	701.8	688.6
Accumulated other comprehensive loss	(5.0)	(5.5)
Retained earnings	331.7	367.3
Total stockholders' equity	988.9	1,010.9
Total liabilities and stockholders' equity	$ 2,321.3	$ 2,229.4