Commitments and Contingencies - Additional Information (Detail) $ in Millions		3 Months Ended	9 Months Ended
	Sep. 23, 2015 USD ($)	Sep. 30, 2016 USD ($) Installment	Sep. 30, 2016 USD ($)
Commitments and Contingencies [Line Items]
Loss Contingency, name of plaintiff			Baldwin Hackett & Meeks, Inc.
Loss contingency, damages sought, value	$ 43.8
Loss contingency, damages awarded, value			$ 43.8
Attorney fees and costs			2.7
Software Licenses
Commitments and Contingencies [Line Items]
Purchase agreement		$ 9.8	9.8
Number of equal annual installments to be paid | Installment		3
Other Current Liabilities | Software Licenses
Commitments and Contingencies [Line Items]
Purchase agreement		$ 3.3	3.3
Other Noncurrent Liabilities | Software Licenses
Commitments and Contingencies [Line Items]
Purchase agreement		$ 6.5	$ 6.5