Note 12 - Segment Information - Summary of Reportable Operating Segments (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net sales	$ 24,502,272	$ 18,388,381	$ 19,280,770	$ 20,149,845	$ 24,100,498	$ 18,628,362	$ 19,552,905	$ 20,672,227	$ 82,321,268	$ 82,923,992	$ 84,161,200
Gross Profit	15,296,919	$ 11,635,331	$ 12,895,534	$ 12,286,045	14,519,835	$ 11,644,871	$ 12,895,790	$ 12,652,746	52,113,829	51,713,242	52,071,060
Operating earnings									7,241,822	10,300,731	10,474,700
Interest expense									205,555	155,189	330,004
Other expense, net									(126,857)	(57,287)	(74,357)
Income before income taxes									7,163,124	10,202,829	10,219,053
Depreciation and amortization									1,875,102	1,719,154	1,567,172
Fixed asset additions									1,689,645	1,697,704	2,164,040
Total assets	74,914,596				70,652,720				74,914,596	70,652,720	64,611,076
North America Segment [Member]
Net sales									78,568,219	79,041,920	80,468,597
Gross Profit									49,889,888	49,315,003	49,838,455
Operating earnings									7,498,817	10,224,773	10,353,404
Interest expense									205,555	155,189	330,004
Other expense, net									(135,011)	(35,290)	(63,230)
Income before income taxes									7,428,370	10,104,873	10,086,630
Depreciation and amortization									1,790,421	1,631,534	1,509,592
Fixed asset additions									1,666,171	1,609,829	1,878,229
Total assets	70,302,116				66,502,432				70,302,116	66,502,432	59,894,498
International Leathercraft [Member]
Net sales									3,753,049	3,882,072	3,692,603
Gross Profit									2,223,941	2,398,239	2,232,605
Operating earnings									(256,995)	75,958	121,296
Interest expense
Other expense, net									8,154	(21,997)	(11,127)
Income before income taxes									(265,246)	97,956	132,423
Depreciation and amortization									84,681	87,620	57,580
Fixed asset additions									23,474	87,875	285,811
Total assets	$ 4,612,480				$ 4,150,288				$ 4,612,480	$ 4,150,288	$ 4,716,578