Restatement of Previously Issued Financial Statements - Schedule of Effect of Restatements on Consolidated Balance Sheets (Details) - USD ($)	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Current assets	$ 7,675,186	$ 8,325,683	$ 7,390,328	$ 6,641,784	$ 6,350,564	$ 6,569,426	$ 5,539,348	$ 5,098,664
Total assets	19,639,193	20,678,650	20,601,382	20,756,951	21,308,644	22,368,855	28,520,693	28,937,040
Current liabilities	5,931,980	9,827,142	8,945,406	9,055,574	7,666,905	8,629,615	3,628,168	3,595,827
Total liabilities	12,228,974	12,348,163	12,530,467	13,702,323	14,373,280	15,393,495	15,212,107	16,028,535
Total shareholders’ equity	7,410,219	8,330,487	8,070,915	7,054,628	6,935,364	6,975,360	13,308,586	12,908,505	$ 13,968,430
Total liabilities and shareholders' equity	19,639,193	20,678,650	20,601,382	20,756,951	21,308,644	22,368,855	28,520,693	28,937,040
As Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Current assets	7,675,186	8,601,297	7,568,453	6,728,071	6,350,564	6,821,026	5,703,081	5,180,314
Total assets	27,006,405	28,321,476	28,146,719	28,210,450	28,675,856	30,367,172	29,452,100	29,786,364
Current liabilities	5,931,980	9,827,142	8,945,406	9,055,574	7,666,905	8,629,615	3,628,168	3,595,827
Total liabilities	12,228,974	12,348,163	12,530,467	13,702,323	14,373,280	15,393,495	15,212,107	16,028,535
Total shareholders’ equity	14,777,431	15,973,313	15,616,252	14,508,127	14,302,576	14,973,677	14,239,993	13,757,829
Total liabilities and shareholders' equity	27,006,405	28,321,476	28,146,719	28,210,450	28,675,856	30,367,172	29,452,100	29,786,364
Restatement Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Current assets		(275,614)	(178,125)	(86,287)		(251,600)	(163,733)	(81,650)
Total assets	(7,367,212)	(7,642,826)	(7,545,337)	(7,453,499)	(7,367,212)	(7,998,317)	(931,407)	(849,324)
Current liabilities
Total liabilities
Total shareholders’ equity	(7,367,212)	(7,642,826)	(7,545,337)	(7,453,499)	(7,367,212)	(7,998,317)	(931,407)	(849,324)
Total liabilities and shareholders' equity	$ (7,367,212)	$ (7,642,826)	$ (7,545,337)	$ (7,453,499)	$ (7,367,212)	$ (7,998,317)	$ (931,407)	$ (849,324)