Condensed Balance Sheets (Current Period Unaudited) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Current Assets:
Cash	$ 824,347	$ 1,002,023
Accounts receivable, net of allowance for doubtful accounts of $470,748 as of March 31, 2016 and $75,000 as of December 31, 2015	9,739,827	7,665,837
Costs and estimated earnings in excess of billings on uncompleted contracts	92,884,034	102,622,387
Prepaid expenses and other current assets	1,264,895	1,065,473
Total current assets	104,713,103	112,355,720
Plant and equipment, net	2,486,981	2,358,736
Deferred income taxes	7,305,000	1,890,000
Other assets	223,472	108,080
Total Assets	114,728,556	116,712,536
Current Liabilities:
Accounts payable	14,925,457	18,379,469
Accrued expenses	1,143,460	1,057,682
Billings in excess of costs and estimated earnings on uncompleted contracts	71,974	175,438
Current portion of long-term debt	641,919	1,011,491
Contract loss	5,159,214	549,723
Line of credit	20,738,685	23,700,000
Income tax payable	23,970	189,000
Total current liabilities	42,704,679	45,062,803
Long-term debt, net of current portion	9,809,084	483,961
Other liabilities	626,392	633,663
Total Liabilities	53,140,155	46,180,427
Shareholders’ Equity:
Common stock - $.001 par value; authorized 50,000,000 shares, 8,596,982 and 8,583,511 shares, respectively, issued and outstanding	8,596	8,584
Additional paid-in capital	52,410,431	52,137,384
Retained earnings	$ 9,169,374	18,389,594
Accumulated other comprehensive loss		(3,453)
Total Shareholders’ Equity	$ 61,588,401	70,532,109
Total Liabilities and Shareholders’ Equity	$ 114,728,556	$ 116,712,536

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.