Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 333,768	$ 228,623
Restricted cash	119	5,287
Short-term investments	209,434	189,463
Trade accounts receivable, net of allowance for doubtful accounts of $4,135 and $3,909 at December 31, 2017 and 2016, respectively	300,308	248,757
Inventories	339,081	275,869
Other current assets	53,543	50,770
Total current assets	1,236,253	998,769
Property, plant and equipment, net	171,782	174,559
Goodwill	591,047	588,585
Intangible assets, net	366,398	408,004
Long-term investments	10,655	9,858
Other assets	37,883	32,467
Total assets	2,414,018	2,212,242
Current liabilities:
Short-term debt	2,972	10,993
Accounts payable	82,518	69,337
Accrued compensation	96,147	67,728
Income taxes payable	21,398	22,794
Deferred revenue	12,842	14,463
Other current liabilities	73,945	51,985
Total current liabilities	289,822	237,300
Long-term debt, net	389,993	601,229
Non-current deferred taxes	61,571	66,446
Non-current accrued compensation	51,700	44,714
Other liabilities	32,025	20,761
Total liabilities	825,111	970,450
Commitments and contingencies (Note 21)
Stockholders' equity:
Preferred stock, $0.01 par value, 2,000,000 shares authorized; none issued and outstanding
Common stock, no par value, 200,000,000 shares authorized; 54,355,535 and 53,672,861 shares issued and outstanding at December 31, 2017 and 2016, respectively	113	113
Additional paid-in capital	789,644	777,482
Retained earnings	795,698	494,744
Accumulated other comprehensive loss	3,452	(30,547)
Total stockholders' equity	1,588,907	1,241,792
Total liabilities and stockholders' equity	$ 2,414,018	$ 2,212,242

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Balance Type:	credit
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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.