Consolidated Condensed Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 7,056	$ 8,523
Restricted cash	629	639
Short-term investment securities	19,921	23,451
Accounts receivable, less allowance for doubtful accounts of $598 at June 30, 2020 and $325 at December 31, 2019	10,447	8,993
Inventories	21,034	16,377
Contract assets	8,111	10,237
Other current assets	1,587	1,975
Current assets of discontinued operations		80
Total current assets	68,785	70,275
Machinery and equipment	44,646	41,073
Less: Accumulated depreciation	30,215	27,522
Net machinery and equipment	14,431	13,551
Goodwill	13,592	9,551
Intangible assets	11,779	5,545
Operating lease right-of-use assets, net	3,421	4,372
Investment in partnerships	695	1,160
Long-term investments securities	3,023	8,629
Other assets, net	326	510
Total assets	116,052	113,593
Current liabilities:
Current financing leases	53	101
Current operating leases	1,483	1,729
Accounts payable	9,469	9,876
Accrued salaries, wages and commissions	3,757	2,274
Other accrued liabilities	4,680	2,869
Liabilities of discontinued operations		77
Total current liabilities	19,442	16,926
Noncurrent financing leases	5	30
Noncurrent operating leases	2,148	2,937
Other postretirement benefit obligations	360	382
Accrued pension liabilities	655	655
Deferred tax liabilities, net	1,124
Other long-term liabilities	3,888	2,171
Total liabilities	27,622	23,101
Commitments and contingencies (Note 18)
Shareholders' equity:
Common stock, $1.00 par value per share; 20,000 shares authorized; 8,934 and 8,781 shares issued and outstanding at June 30, 2020 and December 31, 2019, respectively	8,934	8,781
Additional paid-in capital	88,772	86,770
Accumulated deficit	(8,546)	(4,286)
Accumulated other comprehensive loss	(484)	(520)
Total shareholders' equity	88,676	90,745
Non-controlling interest	(246)	(253)
Total equity	88,430	90,492
Total liabilities and equity	$ 116,052	$ 113,593