Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 212,273	$ 279,736
Restricted cash	809	847
Short-term investments	48,189	47,780
Accounts receivable, net	66,808	98,866
Contract assets	10,397	160
Inventories	156,311	120,266
Deferred cost of sales	3,072	15,994
Prepaid expenses and other current assets	22,221	33,437
Total current assets	520,080	597,086
Property, plant, and equipment, net	80,284	85,058
Intangible assets, net	85,149	369,843
Goodwill	184,302	307,131
Deferred income taxes	1,869	3,047
Other assets	29,132	25,310
Total assets	900,816	1,387,475
Current liabilities:
Accounts payable	39,611	50,318
Accrued expenses and other current liabilities	46,450	58,068
Customer deposits and deferred revenue	72,736	112,032
Income taxes payable	1,256	3,846
Total current liabilities	160,053	224,264
Deferred income taxes	5,690	36,845
Long-term debt	287,392	275,630
Other liabilities	9,906	10,643
Total liabilities	463,041	547,382
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; 48,547,417 and 48,229,251 shares issued at December 31, 2018 and December 31, 2017, respectively; 48,024,685 and 48,144,416 shares outstanding at December 31, 2018 and December 31, 2017, respectively.	485	482
Additional paid-in capital	1,061,325	1,051,953
Accumulated deficit	(619,983)	(212,870)
Accumulated other comprehensive income	1,820	1,812
Treasury stock, at cost, 522,732 and 84,835 shares at December 31, 2018 and December 31, 2017, respectively.	(5,872)	(1,284)
Total stockholders' equity	437,775	840,093
Total liabilities and stockholders' equity	$ 900,816	$ 1,387,475