Income Taxes - Net Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred income tax assets (liabilities):
Stock-based compensation	$ 2,658	$ 1,035
Investment in Paycom Payroll Holdings, LLC	(1,487)	(1,676)
Net operating losses	36
Noncurrent deferred income tax assets (liabilities), net	$ 1,207
Noncurrent deferred income tax assets (liabilities), net		$ (641)