CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 173,876	$ 173,759
Accounts receivable, less reserve for doubtful accounts of $59 at March 31, 2018 and $58 at December 31, 2017, respectively	29,352	27,585
Royalties and other receivables	31	153
Inventories, net	40,124	39,004
Prepaid expenses and other current assets	4,939	2,281
Total current assets	248,322	242,782
Property, plant and equipment, net	22,674	22,417
Intangible assets, net	142,273	144,753
Goodwill	327,989	327,333
Other assets	1,990	6,234
Total assets	743,248	743,519
Current liabilities:
Accounts payable	6,200	7,282
Accrued liabilities	14,121	17,929
Total current liabilities	20,321	25,211
Convertible senior notes, net	100,276	99,250
Deferred tax liabilities	20,858	25,167
Other long-term liabilities	4,610	2,343
Commitments and contingencies (Note 14)
Stockholders' equity:
Preferred stock, $.01 par value, 5,000,000 shares authorized, no shares issued or outstanding
Common stock, $.01 par value, 80,000,000 shares authorized, 43,692,303 shares at March 31, 2018 and 43,587,079 shares at December 31, 2017 issued and outstanding	437	436
Additional paid-in capital	631,595	628,983
Accumulated other comprehensive loss	(6,112)	(6,363)
Accumulated deficit	(28,737)	(31,508)
Total stockholders' equity	597,183	591,548
Total liabilities and stockholders' equity	$ 743,248	$ 743,519

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).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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.