Condensed Consolidated Statement of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net loss	$ (490,735)	$ (754,104)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation expense	3,165	931
Amortization of intangible assets	36,281	147,316
Interest income on short-term investment		(4)
Stock-based compensation	162,493	79,989
Changes in operating assets and liabilities:
Accounts receivable	(1,210,288)	1,576,243
Cost and estimated earnings in excess of billings on uncompleted contracts	247,901	59,763
Prepaid expenses and other current assets	205,641	(442,192)
Accounts payable and accrued expenses	(317,983)	(542,879)
Billings in excess of costs and estimated earnings on uncompleted contracts	245,594	(509,846)
Net cash used in operating activities	(1,117,931)	(384,783)
Cash flows provided by investing activities:
Proceeds from short-term investment		30,037
Purchase of property, plant and equipment		(3,184)
Net cash used in investing activities		26,853
Cash flows from financing activities:
Net cash provided by financing activities
Net increase (decrease) in cash and cash equivalents	(1,117,931)	(357,930)
Cash and cash equivalents - beginning of period	1,368,395	1,368,395
Cash and cash equivalents - end of period	250,464	4,512,894
Supplemental disclosure of non-cash investing and financing activities:
Non cash conversion of salary liability to restricted stock units	$ 54,315