Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 137.2	$ 112.2
Restricted cash	0.2	0.2
Accounts receivable, net	121.5	262.5
Inventories	211.0	205.8
Prepaid expenses and other current assets	58.6	40.1
Total current assets	528.5	620.8
Property, plant and equipment, net	513.4	510.2
Intangible assets, net	757.1	761.6
In-process research and development	41.0	50.0
Goodwill	267.7	259.7
Other assets	46.0	27.1
Total assets	2,153.7	2,229.4
Current liabilities:
Accounts payable	78.6	80.7
Accrued expenses	49.6	30.7
Contingent consideration, current portion	62.7	5.6
Accrued compensation	36.9	58.2
Long-term indebtedness, current portion	10.1	10.1
Other current liabilities	10.5	15.1
Total current liabilities	248.4	200.4
Contingent consideration	10.0	54.4
Long-term indebtedness	732.4	784.5
Deferred tax liability	66.4	67.5
Deferred revenue, net of current portion	64.7	62.5
Other liabilities	44.3	49.2
Total liabilities	1,166.2	1,218.5
Commitments and contingencies (Notes 8 & 14)
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, 52.6 shares issued and 51.4 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	(39.6)	(39.6)
Additional paid-in capital	690.2	688.6
Accumulated other comprehensive loss	(4.5)	(5.5)
Retained earnings	341.3	367.3
Total stockholders' equity	987.5	1,010.9
Total liabilities and stockholders' equity	$ 2,153.7	$ 2,229.4