Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current Assets
Cash and cash equivalents	$ 145,137	$ 151,193
Accounts receivable, net	31,826	39,882
Inventories, net	23,435	13,099
Prepaid expenses and other current assets	3,431	4,022
Total current assets	203,829	208,196
Property and equipment, net	42,040	37,069
Intangible assets, net	12,301	14,064
Goodwill	37,536	37,536
Other assets	4,687	5,291
Total assets	300,393	302,156
Current Liabilities
Accounts payable	17,916	14,659
Accrued expenses and other current liabilities	26,443	24,703
Deferred revenue	2,088	1,554
Current portion of capital lease obligations	6,235	3,380
Total current liabilities	52,682	44,296
Capital lease obligations	2,315	2,263
Long-term debt, net of discount	172,220	168,994
Other long-term liabilities	2,921	2,774
Total liabilities	$ 230,138	$ 218,327
Commitments and contingencies (Note 11)
Stockholders’ Equity
Preferred stock, $.001 par value: Authorized: 5,000,000 shares at June 30, 2015 and December 31, 2014 Issued and outstanding: zero shares at June 30, 2015 and December 31, 2014	$ 0	$ 0
Common stock, $.001 par value: Authorized: 100,000,000 shares at June 30, 2015 and December 31, 2014. Issued and outstanding: 56,876,012 and 56,299,022 shares at June 30, 2015 and December 31, 2014, respectively	57	56
Additional paid-in capital	675,489	661,798
Accumulated deficit	(605,291)	(578,025)
Total stockholders’ equity	70,255	83,829
Total liabilities and stockholders’ equity	$ 300,393	$ 302,156