Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 277,444	$ 269,232
Short-term investments	66,787	116,050
Accounts receivable, net	58,020	49,524
Inventories	77,063	77,469
Deferred cost of sales	6,160	2,100
Prepaid expenses and other current assets	16,034	22,760
Assets held for sale		5,000
Total current assets	501,508	542,135
Property, plant and equipment, net	60,646	79,590
Intangible assets, net	58,378	131,674
Goodwill	114,908	114,908
Deferred income taxes	2,045	1,384
Other assets	21,047	21,098
Total assets	758,532	890,789
Current liabilities:
Accounts payable	22,607	30,074
Accrued expenses and other current liabilities	33,201	49,393
Customer deposits and deferred revenue	85,022	76,216
Income taxes payable	2,311	6,208
Current portion of long-term debt	368	340
Total current liabilities	143,509	162,231
Deferred income taxes	13,199	11,211
Long-term debt	826	1,193
Other liabilities	6,403	1,539
Total liabilities	163,937	176,174
Stockholders' equity:
Preferred stock, $0.01 par value; 500,000 shares authorized; no shares issued and outstanding
Common stock, $0.01 par value; 120,000,000 shares authorized; 40,714,790 and 40,995,694 shares issued at December 31, 2016 and 2015, respectively; 40,588,194 and 40,526,902 shares outstanding at December 31, 2016 and 2015, respectively.	407	410
Additional paid-in capital	763,303	767,137
Accumulated deficit	(168,583)	(45,058)
Accumulated other comprehensive income	1,777	1,348
Treasury stock, at cost, 126,596 and 468,792 shares at December 31, 2016 and 2015, respectively.	(2,309)	(9,222)
Total stockholders' equity	594,595	714,615
Total liabilities and stockholders' equity	$ 758,532	$ 890,789