Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 56,818	$ 45,219
Restricted cash	6,848	9,200
Accounts receivable - trade, net of allowance for doubtful accounts of $17.9 million as of March 31, 2021 and $4.0 million as of December 31, 2020	82,028	97,253
Other receivables	10,159	9,165
Inventories	41,116	39,572
Contract assets	6,233	6,182
Prepaid expenses and other current assets	7,603	5,332
Total current assets	210,805	211,923
Property, plant and equipment, net	7,880	7,146
Right-of-use assets from operating leases	14,535	18,483
Goodwill	5,675	3,977
Intangible assets, net	6,759	3,377
Deferred tax assets	1,633	1,405
Other assets	5,589	5,919
Total assets	252,876	252,230
Current liabilities:
Accounts payable - trade	50,955	49,250
Short-term debt - bank, trade facilities and secured borrowings	1,764	13,787
Contract liabilities	3,997	4,400
Operating lease liabilities	4,435	4,494
Accrued and other liabilities	18,941	16,707
Total current liabilities	80,092	88,638
Long-term debt, related parties		29,754
Contract liabilities	2,495	2,471
Operating lease liabilities - non-current	16,154	15,959
Pension liabilities	18,936	20,052
Other long-term liabilities	3,697	1,777
Total liabilities	121,374	158,651
Commitments and contingencies (Note 14)
Stockholders’ equity:
Common stock, authorized 36,000 shares, 26,883 and 21,958 shares outstanding as of March 31, 2021 and December 31, 2020, respectively, at $0.001 par value	27	22
Additional paid-in capital	211,438	147,997
Accumulated other comprehensive loss	(4,422)	(2,124)
Accumulated deficit	(75,541)	(52,316)
Total stockholders’ equity	131,502	93,579
Total liabilities and stockholders’ equity	$ 252,876	$ 252,230