CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 52,289	$ 56,103
Restricted cash	1,664	8,500
Accounts receivable, net of allowances	53,718	67,754
Inventories	32,168	32,956
Prepaid expenses	13,140	8,853
Contract assets	14,418	16,513
Other current assets	6,559	5,917
Total current assets	173,956	196,596
Property and equipment, net	20,140	21,582
Intangible assets, net	0	4,432
Goodwill	32,643	32,643
Right of use assets	31,467	0
Long-term deferred tax assets, net	2,006	1,158
Other long-term assets	6,009	9,432
Total assets	266,221	265,843
Current liabilities:
Accounts payable	35,554	39,239
Accrued compensation and benefits	16,601	21,967
Accrued expenses and other current liabilities	36,531	37,547
Income taxes payable	2,170	1,853
Short-term debt	29,705	1,405
Deferred revenues	71,224	85,662
Total current liabilities	191,785	187,673
Long-term debt	199,593	220,590
Long-term deferred revenues	13,757	13,939
Long-term lease liabilities	28,930	0
Other long-term liabilities	5,081	10,302
Total liabilities	439,146	432,504
Commitments and Contingencies (Note 8)
Stockholders' deficit:
Common stock	429	423
Additional paid-in capital	1,025,796	1,028,924
Accumulated deficit	(1,194,781)	(1,187,010)
Treasury stock at cost	0	(5,231)
Accumulated other comprehensive loss	(4,369)	(3,767)
Total stockholders' deficit	(172,925)	(166,661)
Total liabilities and stockholders' deficit	$ 266,221	$ 265,843