Commitments and Contingencies - Additional Information (Detail)	Jul. 01, 2016 claim defendant	Jun. 07, 2015 plaintiff	Apr. 21, 2015 plaintiff
Virtus Investment Partners, Inc. Securities Litigation [Member]
Loss Contingencies [Line Items]
Number of plaintiffs | plaintiff			3
Virtus Investment Partners, Inc. Securities Litigation [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of defendants dismissed | defendant	1
Mark Youngers v. Virtus Investment Partners, Inc. et al [Member]
Loss Contingencies [Line Items]
Number of plaintiffs | plaintiff		3
Mark Youngers v. Virtus Investment Partners, Inc. et al [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of defendants dismissed | defendant	10
Number of causes of action dismissed | claim	4