CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 81,182	$ 69,085
Restricted cash	1,663	1,663
Accounts receivable, net of allowances	59,965	73,773
Inventories	32,601	29,166
Prepaid expenses	10,101	9,425
Contract assets	22,162	19,494
Other current assets	7,147	6,125
Total current assets	214,821	208,731
Property and equipment, net	18,873	19,580
Goodwill	32,643	32,643
Right of use assets	29,002	29,747
Deferred Income Tax Assets, Net	7,640	7,479
Other long-term assets	5,456	6,113
Total assets	308,435	304,293
Current liabilities:
Accounts payable	34,989	39,888
Accrued compensation and benefits	19,185	19,524
Accrued expenses and other current liabilities	33,044	36,759
Income taxes payable	1,964	1,945
Short-term debt	31,400	30,554
Deferred revenues	82,441	83,589
Total current liabilities	203,023	212,259
Long-term debt	220,426	199,034
Long-term deferred revenues	12,971	14,312
Long-term lease liabilities	28,063	28,127
Other long-term liabilities	5,414	5,646
Total liabilities	469,897	459,378
Commitments and Contingencies (Note 8)
Stockholders' deficit:
Common stock	434	430
Additional paid-in capital	1,028,115	1,027,824
Accumulated deficit	(1,185,266)	(1,179,409)
Accumulated other comprehensive loss	(4,745)	(3,930)
Total stockholders' deficit	(161,462)	(155,085)
Total liabilities and stockholders' deficit	$ 308,435	$ 304,293