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Consolidated Statements of Cash Flows (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Cash flows from operating activities: |  |  |  |
Net (loss)/income | $ (560,323) |  | $ 435,586 |
Stock-based compensation | 461,195 |  | 234,858 |
(Gain)/loss on sale of buildings | (887,477) |  | 693,818 |
(Gain)/loss on sale of other fixed assets | 16,575 |  | (3,288) |
Depreciation and amortization | 646,422 | [1] | 515,215 | [1]
Deferred income tax expense | (1,396,407) |  | (178,307) |
Provision for doubtful accounts | 75,071 |  | 6,537 |
Accounts receivable | 1,556,610 |  | (858,082) |
Cost in excess of billings on uncompleted contracts | 1,152,135 |  | 680,720 |
Inventories, net | (1,754,444) |  | 464,168 |
Other current assets | (53,801) |  | (41,635) |
Billings in excess of costs and estimated earnings on uncompleted contracts | (223,015) |  | (1,211,305) |
Accounts payable | (419,986) |  | 106,004 |
Accrued expenses | 450,982 |  | (271,888) |
Deferred revenue | (130,877) |  | (754,562) |
Total adjustments | (507,017) |  | (617,747) |
Net cash used in operating activities | (1,067,340) |  | (182,161) |
Cash flows from investing activities: |  |  |  |
Restricted cash |  |  | 200,000 |
Capital expenditures | (2,071,557) |  | (11,796,740) |
Deposits | 6,833 |  | 322,281 |
Net cash provided by/(used in) investing activities | 1,555,175 |  | (9,670,636) |
Cash flows from financing activities |  |  |  |
Net proceeds from stock options exercised | 75,735 |  | 286,547 |
Proceeds from long-term debt |  |  | 6,000,000 |
Payments of long-term debt | (3,037,334) |  | (848,953) |
Net cash (used in)/provided by financing activities | (2,961,599) |  | 5,437,594 |
Net decrease in cash and cash equivalents | (2,473,764) |  | (4,415,203) |
Cash and cash equivalents at beginning of year | 13,721,324 |  | 18,136,527 |
Cash and cash equivalents at end of year | 11,247,560 |  | 13,721,324 |
Income taxes paid | 25 |  | 451,525 |
Interest paid | 163,738 |  | 204,874 |
Building [Member] |  |  |  |
Cash flows from investing activities: |  |  |  |
Proceeds from sale of property, plant and equipment | 3,619,899 |  | 1,582,323 |
Other Fixed Assets [Member] |  |  |  |
Cash flows from investing activities: |  |  |  |
Proceeds from sale of property, plant and equipment |  |  | $ 21,500 |
[1] | Includes amortization expense of $20,434 and $14,096 for the years ending December 31, 2013 and 2012, respectively. Such amortization expense relates toother capitalized and intangible assets.

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- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.5) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 5 -Article 5 + Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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