Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 170,203	$ 80,386
Short-term investments	126,101	79,666
Accounts receivable, net of allowances of $4	56,841	5,924
Inventory	4,476	4,680
Prepaid expenses and other current assets	5,973	2,668
Total current assets	363,594	173,324
Property and equipment, net of accumulated depreciation and amortization of $61,257 and $60,006, respectively	14,540	15,865
Goodwill	44,543	44,543
Other intangible assets, net of accumulated amortization of $4,561 and $3,237, respectively	20,157	50,119
Other assets	1,754	285
Total assets	444,588	284,136
Current liabilities:
Accounts payable	20,907	17,759
Accrued liabilities	11,511	14,482
Current portion of deferred revenue	1,117	3,395
Current portion of long-term debt, net of deferred issuance costs	11,289	1,115
Total current liabilities	44,824	36,751
Deferred revenue, net of current portion	0	23,651
Long-term debt, net of deferred issuance costs	233,837	243,887
Deferred tax liabilities	0	6,014
Other long-term liabilities	1,215	238
Total liabilities	279,876	310,541
Commitments and contingencies
Equity:
Preferred stock, $.01 par value; 5,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $.001 par value; 225,000 shares authorized; 106,679 and 106,162 shares issued, respectively	106	106
Additional paid-in capital	1,458,693	1,447,954
Accumulated deficit	(1,290,306)	(1,471,577)
Accumulated other comprehensive loss	36	(12)
Treasury stock, at cost, 407 and 236 shares, respectively	(3,817)	(2,876)
Total stockholder's equity (deficit)	164,712	(26,405)
Total liabilities and equity	$ 444,588	$ 284,136