Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 133,256	$ 104,261
Investments	24,000	20,500
Accounts receivable, net of reserves of $1,914 and $194 at December 31, 2017 and December 31, 2016, respectively	23,825	27,598
Inventories, net	22,035	15,983
Prepaid expenses and other current assets	3,211	2,098
Total current assets	206,327	170,440
Property and equipment, net	56,183	52,296
Other long-term assets	1,254	69
Intangible assets, net	10,635	10,227
Goodwill	8,218	7,214
Total assets	282,617	240,246
Current liabilities:
Accounts payable	6,747	2,303
Accrued expenses and other current liabilities	6,326	6,496
Total current liabilities	13,073	8,799
Other long-term liabilities	660	2,126
Deferred tax liability	5,393	6,548
Commitments and contingencies (Note 11)
Stockholders’ equity:
Preferred stock, $0.01 par value; 1,250 shares authorized, no shares issued and outstanding at December 31, 2017 and December 31, 2016, respectively	0	0
Common stock, $0.01 par value; 60,000 shares authorized, 14,688 and 14,627 shares issued and outstanding at December 31, 2017 and December 31, 2016, respectively	147	146
Additional paid-in-capital	68,617	61,735
Accumulated other comprehensive loss	(4,784)	(7,317)
Retained earnings	199,511	168,209
Total stockholders’ equity	263,491	222,773
Total liabilities and stockholders’ equity	$ 282,617	$ 240,246