Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash, cash equivalents and restricted cash	$ 9,162	$ 8,047
Short-term investments securities	23,451	38,093
Accounts receivable, less allowance for doubtful accounts of $325 at December 31, 2019 and $807 at December 31, 2018	8,993	11,266
Inventories	16,377	18,163
Contract assets	10,237	5,624
Other current assets	1,975	2,146
Current assets of discontinued operations	80	1,205
Total current assets	70,275	84,544
Machinery and equipment	41,073	36,725
Less: Accumulated depreciation	27,522	25,303
Net machinery and equipment	13,551	11,422
Goodwill	9,551	10,808
Intangible assets, net		2,585
Operating lease right-of-use assets, net	4,372
Investment in partnerships	1,160	2,091
Long-term investments securities	8,629
Other assets, net	6,055	3,427
Noncurrent assets of discontinued operations		371
Total assets	113,593	115,248
Current liabilities:
Current financing leases	101
Current operating leases	1,729
Accounts payable	9,876	12,871
Accrued salaries, wages and commissions	2,274	4,409
Other accrued liabilities	2,869	4,031
Liabilities of discontinued operations	77	336
Total current liabilities	16,926	21,647
Noncurrent financing leases	30
Noncurrent operating leases	2,937
Other postretirement benefit obligations	382	377
Accrued pension liabilities	655	706
Other long-term liabilities	2,171	544
Total liabilities	23,101	23,274
Commitments and contingencies
Shareholders' equity:
Common stock, $1.00 par value per share; 20,000 shares authorized; 8,781 and 8,664 shares issued and outstanding at December 31, 2019 and December 31, 2018, respectively	8,781	8,664
Additional paid-in capital	86,770	84,999
Accumulated deficit	(4,286)	(509)
Accumulated other comprehensive loss	(520)	(927)
Total shareholders' equity	90,745	92,227
Non-controlling interest	(253)	(253)
Total equity	90,492	91,974
Total liabilities and equity	$ 113,593	$ 115,248