Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Reconciliation of net income to net cash provided by operating activities
Net income	$ (804,838)	$ 691,502
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	636,644	634,869
Gain on sale of fixed assets	174	(61,634)
Realized loss on investment securities available-for-sale	0	68,631
Deferred taxes	67,000	(101,000)
(Increase) decrease in
Accounts receivable - billed	3,203,868	(2,544,063)
Accounts receivable - unbilled	(198,776)	356,525
Inventories	212,934	164,628
Refundable income taxes	(722,948)	173,155
Prepaid expenses and other assets	164,660	47,055
Increase (decrease) in
Accounts payable - trade	(365,115)	595,536
Accrued expenses and other liabilities	(388,278)	220,461
Accrued compensation	38,805	(29,020)
Accrued income taxes payable	(302,264)	302,262
Customer deposits	(115,515)	300,939
Net cash provided by operating activities	1,426,351	819,846
Cash Flows From Investing Activities
Purchases of investment securities available-for-sale	(78,453)	(2,024,147)
Sale of investment securities available-for-sale	0	1,000,000
Purchases of property and equipment	(465,826)	(908,609)
Proceeds from sale of fixed assets	46,230	61,792
Net cash absorbed by investing activities	(498,049)	(1,870,964)
Cash Flows From Financing Activities
Proceeds from long-term borrowings	55,159	2,303,339
Repayments of long-term borrowings	(372,880)	(2,385,856)
Dividends paid on common stock	(174,239)	(144,489)
Proceeds from options exercised	0	46,713
Net cash absorbed by financing activities	(491,960)	(180,293)
Net increase (decrease) in cash and cash equivalents	436,342	(1,231,411)
Cash and cash equivalents
Beginning of period	3,136,063	4,367,474
End of period	3,572,405	3,136,063
Supplemental schedule of non-cash investing activities
Cash Payments for interest	116,229	132,026
Cash Payments for income taxes	$ 48,609	$ 19,600