Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands		3 Months Ended		12 Months Ended
	Jan. 01, 2017 USD ($)	Mar. 31, 2017 USD ($) Customer	Mar. 31, 2016 Customer	Dec. 31, 2016 Customer
Revenue, Major Customer [Line Items]
Cumulative effect adjustment to accumulated deficit | $		$ 14
ASU 2016-09 [Member]
Revenue, Major Customer [Line Items]
Cumulative effect adjustment to accumulated deficit | $	$ 2,600
Credit Concentration Risk [Member]
Revenue, Major Customer [Line Items]
Number of customers representing 11% or more of gross accounts receivable		1
Number of customers representing 18% or more of accounts receivable				1
Revenue [Member] | Customer Concentration Risk [Member]
Revenue, Major Customer [Line Items]
Minimum percentage of revenue or gross accounts receivable balance required to be significant customers		11.00%	14.00%
Number of customers representing 10% or more of revenue		1	1
Accounts Receivable [Member] | Credit Concentration Risk [Member]
Revenue, Major Customer [Line Items]
Minimum percentage of revenue or gross accounts receivable balance required to be significant customers		11.00%		18.00%
Accounts Receivable [Member] | Credit Concentration Risk [Member] | Customer Two [Member]
Revenue, Major Customer [Line Items]
Minimum percentage of revenue or gross accounts receivable balance required to be significant customers		10.00%		9.00%