Note 6 - Business Acquisitions - Separately Recognized Transactions (Details) - USD ($)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Amortization of intangible assets acquired for the year		$ 772,478
Revenues since the acquisition date included in the consolidated statement of operations		2,234,155
Earnings since the acquisition date included in the consolidated statement of operations		(156,995)
Costs of acquisition included in professional fees in the consolidated statement of operations		185,572
Surety Support Services, Inc [Member]
Amortization of intangible assets acquired for the year		27,497
Revenues since the acquisition date included in the consolidated statement of operations		182,907
Earnings since the acquisition date included in the consolidated statement of operations		(56,548)
Costs of acquisition included in professional fees in the consolidated statement of operations		28,293
LMSE [Member]
Amortization of intangible assets acquired for the year	$ 688,889
Revenues since the acquisition date included in the consolidated statement of operations	853,018
Earnings since the acquisition date included in the consolidated statement of operations	(210,647)
Costs of acquisition included in professional fees in the consolidated statement of operations	170,856
Clear Channel Outdoor Inc. [Member]
Amortization of intangible assets acquired for the year		324,510
Revenues since the acquisition date included in the consolidated statement of operations		863,463
Earnings since the acquisition date included in the consolidated statement of operations		(20,972)
Costs of acquisition included in professional fees in the consolidated statement of operations		23,218
South Coast Surety Insurance Services, LLC [Member]
Amortization of intangible assets acquired for the year		63,240
Revenues since the acquisition date included in the consolidated statement of operations		362,871
Earnings since the acquisition date included in the consolidated statement of operations		(101,858)
Costs of acquisition included in professional fees in the consolidated statement of operations		64,945
LMM [Member]
Amortization of intangible assets acquired for the year	900,800
Revenues since the acquisition date included in the consolidated statement of operations	1,947,895
Earnings since the acquisition date included in the consolidated statement of operations	(418,705)
Costs of acquisition included in professional fees in the consolidated statement of operations	177,658
Hartlind Outdoor LLC [Member]
Amortization of intangible assets acquired for the year		55,389
Revenues since the acquisition date included in the consolidated statement of operations		321,745
Earnings since the acquisition date included in the consolidated statement of operations		142,693
Costs of acquisition included in professional fees in the consolidated statement of operations		17,395
Free State Bonds Inc. [Member]
Amortization of intangible assets acquired for the year		806
Revenues since the acquisition date included in the consolidated statement of operations
Earnings since the acquisition date included in the consolidated statement of operations		(18,365)
Costs of acquisition included in professional fees in the consolidated statement of operations		728
LMO [Member]
Amortization of intangible assets acquired for the year	1,603,300
Revenues since the acquisition date included in the consolidated statement of operations	4,468,421
Earnings since the acquisition date included in the consolidated statement of operations	(93,469)
Costs of acquisition included in professional fees in the consolidated statement of operations	195,325
Southeastern US [Member]
Amortization of intangible assets acquired for the year		301,036
Revenues since the acquisition date included in the consolidated statement of operations		503,169
Earnings since the acquisition date included in the consolidated statement of operations		(101,945)
Costs of acquisition included in professional fees in the consolidated statement of operations		50,993
Surety Support Services, South Cost Surety Insurances Services LLC, and Free State Bonds Inc. [Member]
Amortization of intangible assets acquired for the year		91,543
Revenues since the acquisition date included in the consolidated statement of operations		545,778
Earnings since the acquisition date included in the consolidated statement of operations		(176,771)
Costs of acquisition included in professional fees in the consolidated statement of operations		93,966
LMSE, LMM and LMO [Member]
Amortization of intangible assets acquired for the year	3,192,989
Revenues since the acquisition date included in the consolidated statement of operations	7,269,334
Earnings since the acquisition date included in the consolidated statement of operations	(722,821)
Costs of acquisition included in professional fees in the consolidated statement of operations	$ 543,839
Clear Channel Outdoor, Hartlind and Southeastern US [Member]
Amortization of intangible assets acquired for the year		680,935
Revenues since the acquisition date included in the consolidated statement of operations		1,688,377
Earnings since the acquisition date included in the consolidated statement of operations		19,776
Costs of acquisition included in professional fees in the consolidated statement of operations		$ 91,606

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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