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CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) | 9 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017
Cash flows from operating activities: |  |
Net income | $ 3,842,143 | $ 3,710,461
Adjustments to reconcile net income to net cash used in operating activities: |  |
Depreciation and amortization | 521,255 | 459,261
Debt issuance costs | 58,990 | 48,133
Deferred rent | (53,073) | (22,525)
Loss on disposal of fixed asset |  | 21,010
Stock-based compensation | 536,170 | 787,290
Common stock issued as employee compensation | 45,913 |
Adjustment for maturity of interest rate swap | 20,600 |
Bad debt expense | 125,000 | 150,000
Deferred income taxes | 1,066,500 | 1,802,128
Changes in operating assets and liabilities: |  |
(Increase) decrease in accounts receivable | (1,109,365) | 3,621,017
Increase in contract assets | (2,936,411) | (8,799,379)
Decrease (increase) in prepaid expenses and other assets | 82,357 | (299,317)
Decrease in accounts payable and accrued expenses | (5,347,688) | (888,218)
Increase (decrease) in contract liabilities | 218,493 | (798,882)
Decrease in other liabilities | (10,976) |
Decrease in income taxes payable | (109,327) |
Net cash used in operating activities | (3,049,419) | (209,021)
Cash flows used in investing activities: |  |
Purchase of property and equipment | (521,499) | (240,916)
Proceeds from sale of fixed asset |  | 42,480
Net cash used in investing activities | (521,499) | (198,436)
Cash flows from financing activities: |  |
Payments on long-term debt | (1,522,283) | (921,046)
Proceeds from line of credit | 6,200,000 | 3,000,000
Payments on line of credit | (1,500,000) | (2,000,000)
Debt issue costs paid | (209,082) |
Net cash provided by financing activities | 2,968,635 | 78,954
Net decrease in cash | (602,283) | (328,503)
Cash at beginning of period | 1,430,877 | 1,039,586
Cash at end of period | 828,594 | 711,083
Supplemental disclosures of cash flow information: |  |
Equipment acquired under capital lease | 649,158 |
Noncash investing and financing activities: |  |
Interest | $ 1,601,144 | 1,172,964
Income taxes |  | $ 144,614

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X
- Definition The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the 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=98514028&loc=d3e3291-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- 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=98514028&loc=d3e3602-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration