Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 17,125	$ 46,666
Restricted cash	5,862	6,808
Accounts receivable - trade, net of allowance for doubtful accounts of $16,304 as of June 30, 2022 and $17,735 as of December 31, 2021	105,343	86,114
Other receivables	12,988	10,621
Inventories	69,457	56,893
Contract assets	1,281	2,184
Prepaid expenses and other current assets	12,525	5,690
Total current assets	224,581	214,976
Property, plant and equipment, net	9,849	9,842
Right-of-use assets from operating leases	14,996	12,640
Goodwill	28,977	6,145
Intangible assets, net	23,156	5,115
Other assets	10,264	8,950
Total assets	311,823	257,668
Current liabilities:
Accounts payable - trade	79,678	64,258
Current portion of long-term debt	1,250
Contract liabilities	20,446	6,091
Operating lease liabilities	4,445	4,097
Accrued and other liabilities	19,166	16,032
Total current liabilities	124,985	90,478
Long-term debt	23,419
Contract liabilities - non-current	7,858	3,044
Operating lease liabilities - non-current	13,410	12,103
Pension liabilities	15,073	16,527
Other long-term liabilities	2,990	3,609
Total liabilities	187,735	125,761
Commitments and contingencies (Note 13)
Stockholders’ equity:
Common stock, 36,000 shares authorized, 27,784 and 27,505 shares issued and outstanding as of June 30, 2022 and December 31, 2021, respectively, at $0.001 par value	27	27
Additional paid-in capital	229,969	223,336
Accumulated other comprehensive loss	(9,432)	(4,457)
Accumulated deficit	(96,476)	(86,999)
Total stockholders’ equity	124,088	131,907
Total liabilities and stockholders’ equity	$ 311,823	$ 257,668