Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 48	$ 1,247
Restricted cash	482	150
Accounts receivable, net of allowance for doubtful accounts of $185 and $96 at December 31, 2017 and 2016, respectively	3,840	2,604
Costs and estimated profit in excess of billings	565	1,045
Inventories	1,285	1,404
Fair value of contingent earn-out receivable, current	373	359
Other current assets	216	237
Total current assets	6,809	7,046
Property, plant and equipment:
Land	858	858
Buildings and improvements	2,763	2,795
Equipment	1,946	1,508
Less: accumulated depreciation and amortization	(1,111)	(768)
Property, plant and equipment, net	4,456	4,393
Fair value of contingent earn-out receivable, noncurrent	61	202
Goodwill	0	3,020
Intangible assets, net	1,589	2,117
Total assets	12,915	16,778
Current liabilities:
Notes payable	5,969	3,420
Current portion of long-term debt	1,068	1,675
Trade accounts payable	4,856	3,776
Billings in excess of costs and estimated profit	983	652
Accrued compensation	416	407
Fair value of contingent earn-out payable	0	967
Other accrued liabilities	2,370	2,264
Total current liabilities	15,662	13,161
Long-term debt, less current provision	3,061	14,069
Deferred income taxes	28	19
Commitments and contingencies (see Notes 18 and 19)
Shareholders' deficit:
Preferred stock, $.001 par value; 2,000,000 shares authorized; 546,466 shares issued and outstanding at December 31, 2017	0	0
Common stock, $.001 par value; 7,500,000 shares and 3,200,000 shares authorized as of December 31, 2017 and 2016, respectively; 2,396,219 shares issued and outstanding at December 31, 2017 and 2,366,219 issued and outstanding at December 31, 2016	2	2
Additional paid-in capital	83,014	69,702
Accumulated deficit	(88,852)	(80,175)
Total shareholders' deficit	(5,836)	(10,471)
Total liabilities and shareholders' deficit	$ 12,915	$ 16,778