Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 423,661	$ 277,444
Short-term investments	258,196	66,787
Accounts receivable, net	51,433	58,020
Inventories	64,697	77,063
Deferred cost of sales	4,684	6,160
Prepaid expenses and other current assets	19,777	16,034
Total current assets	822,448	501,508
Property, plant and equipment, net	63,684	60,646
Intangible assets, net	55,511	58,378
Goodwill	114,908	114,908
Deferred income taxes	4,044	2,045
Other assets	21,047	21,047
Total assets	1,081,642	758,532
Current liabilities:
Accounts payable	30,732	22,607
Accrued expenses and other current liabilities	28,480	33,201
Customer deposits and deferred revenue	70,785	85,022
Income taxes payable	2,441	2,311
Current portion of long-term debt	375	368
Total current liabilities	132,813	143,509
Deferred income taxes	14,063	13,199
Long-term debt	268,098	826
Other liabilities	1,652	6,403
Total liabilities	416,626	163,937
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; 40,644,117 and 40,714,790 shares issued at March 31, 2017 and December 31, 2016, respectively; 40,568,473 and 40,588,194 shares outstanding at March 31, 2017 and December 31, 2016, respectively	406	407
Additional paid-in capital	831,761	763,303
Accumulated deficit	(167,489)	(168,583)
Accumulated other comprehensive income	1,678	1,777
Treasury stock, at cost, 75,644 shares at March 31, 2017; 126,596 shares at December 31, 2016	(1,340)	(2,309)
Total stockholders' equity	665,016	594,595
Total liabilities and stockholders' equity	$ 1,081,642	$ 758,532