CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 38,580	$ 45,511
Accounts receivable, net	46,155	46,430
Inventory, net	63,667	61,897
Prepaid expenses and other current assets	7,563	6,147
Total current assets	155,965	159,985
Property, plant and equipment, net	51,614	50,714
Goodwill	121,814	121,814
Intangible assets, net	20,412	22,758
Other assets, net	29,239	28,254
Total assets	379,044	383,525
Current liabilities:
Current maturities under capital lease obligation	1,009	973
Accounts payable	20,502	15,367
Accrued expenses	14,619	15,673
Accrued payroll liabilities	9,388	12,068
Total current liabilities	45,518	44,081
Convertible senior notes	37,444	36,894
Capital lease obligation, net of current maturities	34,675	34,933
Deferred income taxes, net	5,017	5,017
Other liabilities	1,047	1,032
Total liabilities	123,701	121,957
Commitments and contingencies
Stockholders’ equity:
Common stock, $0.001 par value, 750,000,000 shares authorized; 42,565,112 and 42,282,741 shares issued and 42,556,501 and 42,274,130 shares outstanding, respectively	43	42
Additional paid-in capital	478,796	474,512
Accumulated deficit	(221,954)	(211,081)
Accumulated other comprehensive loss	(1,408)	(1,771)
Treasury stock, at cost, 8,611 and 8,611 shares, respectively	(134)	(134)
Total stockholders’ equity	255,343	261,568
Total liabilities and stockholders’ equity	$ 379,044	$ 383,525