Consolidated balance sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 51,205	$ 10,059
Accounts receivable, net	36,724	44,634
Inventory, net	46,341	62,679
Prepaid expenses and other current assets	7,473	6,272
Total current assets	141,743	123,644
Property and equipment, net	21,804	18,037
Intangible assets, net	98,773	105,882
Goodwill	157,264	157,264
Investments	2,875	2,875
Other assets	13,397	9,542
Total assets	435,856	417,244
Current liabilities:
Current portion of long-term debt and capital lease obligations	9,861	8,646
Accounts payable	20,483	26,776
Accrued expenses and other current liabilities	12,671	15,939
Total current liabilities	43,015	51,361
Long-term debt and capital lease obligations	140,523	147,702
Deferred tax liabilities	20,217	21,341
Other long-term liabilities	2,770	2,977
Total liabilities	206,525	223,381
Commitments and contingencies (Note 9)
Stockholders' equity:
Common stock, par value of $0.01 per share; 250,000,000 shares authorized as of December 31, 2018 and December 31, 2017; 48,715,276 and 46,617,830 shares issued and outstanding as of December 31, 2018 and December 31, 2017, respectively	478	463
Additional paid-in capital	740,354	720,372
Accumulated deficit	(511,501)	(526,972)
Total stockholders' equity	229,331	193,863
Total liabilities and stockholders' equity	$ 435,856	$ 417,244

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682