Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 58,028	$ 46,192
Trade and other accounts receivable, net of allowance for doubtful accounts of $0 and $32 as of December 31, 2018 and December 31, 2017, respectively	19,966	22,712
Inventories	33,645	23,450
Prepaid expenses and other current assets	2,817	2,159
Current assets of discontinued operations	0	22,463
Total current assets	114,456	116,976
Property and equipment, net	24,377	19,960
Intangible assets, net	10,004	11,715
Goodwill	14,189	14,707
Non-current assets of discontinued operations	0	41,150
Other non-current assets	705	871
Total assets	163,731	205,379
Current liabilities:
Accounts payable and accrued liabilities	16,513	27,283
Accrued employee compensation	7,146	8,418
Deferred revenue and other current liabilities	4,279	6,572
Short-term borrowings and current portion of long-term debt	438	0
Total current liabilities	0	6,257
Total current liabilities	28,376	48,530
Deferred tax liability, long-term	53	4,988
Long-term debt, excluding current portion	37,969	35,042
Defined benefit plan liability	4,489	3,942
Non-current liabilities of discontinued operations	0	3,983
Other long-term liabilities	2,253	2,793
Total liabilities	73,140	99,278
Commitments and contingencies (Note 13 and Note 15)
Stockholders’ equity:
Common stock, $0.10 par value per share, 80,000,000 shares authorized at December 31, 2018 and 2017; 45,996,186 and 37,199,519 shares issued and outstanding at December 31, 2018 and 2017, respectively	4,597	3,717
Additional paid-in capital	369,793	337,541
Accumulated deficit	(283,503)	(247,233)
Accumulated other comprehensive income	(296)	12,076
Total stockholders’ equity	90,591	106,101
Total liabilities and stockholders’ equity	$ 163,731	$ 205,379