Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 270,811	$ 210,799
Short-term investments	120,572	281,538
Restricted cash	539	2,738
Accounts receivable, net	60,085	23,823
Inventories	61,471	59,726
Deferred cost of sales	5,076	724
Prepaid expenses and other current assets	23,132	22,579
Assets held for sale	6,000
Deferred income taxes	7,976	11,716
Total current assets	555,662	613,643
Property, plant and equipment at cost, net	78,752	89,139
Goodwill	114,959	91,348
Deferred income taxes	1,180	397
Intangible assets, net	159,308	114,716
Other assets	19,594	38,726
Total assets	929,455	947,969
Current liabilities:
Accounts payable	18,111	35,755
Accrued expenses and other current liabilities	48,418	51,084
Customer deposits and deferred revenue	96,004	34,754
Income taxes payable	5,441	6,149
Deferred income taxes	120	159
Current portion of long-term debt	314	290
Total current liabilities	168,408	128,191
Deferred income taxes	16,397	28,052
Long-term debt	1,533	1,847
Other liabilities	4,185	9,649
Total liabilities	190,523	167,739
Stockholders' Equity:
Preferred stock, 500,000 shares authorized; no shares issued and outstanding
Common stock, $0.01 par value, 120,000,000 shares authorized; 40,360,069 and 39,666,195 shares issued and outstanding in 2014 and 2013, respectively	404	397
Additional paid-in capital	750,139	721,352
Retained earnings (accumulated deficit)	(13,080)	53,860
Accumulated other comprehensive income	1,469	4,621
Total stockholders' equity	738,932	780,230
Total liabilities and stockholders' equity	$ 929,455	$ 947,969