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Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Current assets    
Cash $ 8,764 $ 1,364
Investment securities, available-for-sale, at fair value 1,228 1,176
Accounts receivable, net    
Trade - billed (less allowance for doubtful accounts of $397 and $333), including contract retentions 9,798 12,723
Trade - unbilled 742 310
Inventories, net    
Raw materials 643 488
Finished goods 1,551 1,754
Prepaid expenses and other assets 615 784
Refundable income taxes 0 432
Total current assets 23,341 19,031
Property and equipment, net 18,602 17,735
Deferred buy-back lease asset, net 4,237 5,042
Other assets 319 307
Total assets 46,499 42,115
Current liabilities    
Accounts payable - trade 1,866 3,180
Accrued expenses and other liabilities 875 125
Deferred revenue 1,774 1,891
Accrued compensation 1,318 1,075
Dividend payable 0 282
Accrued income tax 470 0
Deferred buy-back lease obligation 1,203 966
Operating lease liabilities 85 81
Current maturities of notes payable 740 925
Customer deposits 569 1,077
Total current liabilities 8,900 9,602
Deferred revenue 600 241
Deferred buy-back lease obligation 3,790 5,183
Operating lease liabilities 211 296
Notes payable - less current maturities 4,196 4,086
PPP loan 2,692 0
Deferred tax liability 2,461 1,886
Total liabilities 22,850 21,294
Commitments and contingencies
Stockholders' equity    
Preferred stock, $.01 par value; authorized 1,000,000 shares, none issued and outstanding 0 0
Common stock, $.01 par value; authorized 8,000,000 shares; 5,279,411 and 5,224,911 issued and 5,202,158 and 5,164,324 outstanding, respectively 52 52
Additional paid-in capital 6,405 6,242
Treasury stock, at cost, 40,920 shares (102) (102)
Retained earnings 17,294 14,629
Total stockholders' equity 23,649 20,821
Total liabilities and stockholders' equity $ 46,499 $ 42,115