CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 13,675	$ 26,692
Accounts receivable, net	16,081	12,742
Inventories, net	17,575	16,075
Prepaid expenses and other receivables	2,206	3,622
Total current assets	49,537	59,131
Property, plant and equipment, net	83,290	68,355
Intangible assets, net	52,930	56,017
Goodwill	445	471
Other assets	577	611
Total assets	186,779	184,585
Current liabilities:
Accounts payable	8,771	10,595
Accrued expenses	9,269	8,101
Total current liabilities	18,040	18,696
2021 Term Loan, net of debt discount and debt issuance costs (face of $15,000 as of June 30, 2018)	14,198	0
Convertible 3.75% Senior Notes, net of debt discount and debt issuance costs (face of $68,660 and $143,750 as of June 30, 2018 and December 31, 2017, respectively)	60,312	120,977
Convertible 4.75% Senior Notes, net of debt discount and debt issuance costs (face of $75,090 as of June 30, 2018)	55,369	0
Deferred tax liability	148	159
Total liabilities	148,067	139,832
Commitments and Contingencies
Stockholders’ equity:
Common stock, $0.01 par value, 100,000,000 shares authorized; 53,512,888 and 53,400,281 shares issued and outstanding as of June 30, 2018 and December 31, 2017, respectively	554	554
Additional paid-in capital	118,524	106,312
Accumulated deficit	(78,015)	(60,094)
Accumulated other comprehensive loss	(2,351)	(2,019)
Total stockholders’ equity	38,712	44,753
Total liabilities and stockholders' equity	$ 186,779	$ 184,585