Acquisitions - Schedule of Unaudited Pro Forma Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Smadex
Pro Forma:
Total revenue	$ 307,805	$ 541,663
Net income (loss)	$ 13,133	$ 175,765
Basic and diluted earnings per share:
Net income per share, basic	$ 0.15	$ 1.95
Net income per share, diluted	$ 0.15	$ 1.91
Weighted average common shares outstanding, basic	89,115,997	90,272,257
Weighted average common shares outstanding, diluted	90,328,583	91,891,957
Headway
Pro Forma:
Total revenue		$ 545,592
Net income (loss)		$ 176,138
Basic and diluted earnings per share:
Net income per share, basic		$ 1.95
Net income per share, diluted		$ 1.92
Weighted average common shares outstanding, basic		90,272,257
Weighted average common shares outstanding, diluted		91,891,957