Fair Value Measurements - Summary of Fair Value Assets and Liability Measured on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Fair value information related to assets
Assets	$ 2,170	$ 2,310
Liabilities	(130)
Earnout contingent consideration liability
Fair value information related to assets
Liabilities	(130)
Quoted Prices in Active Markets (Level 1)
Fair value information related to assets
Assets	2,170	2,310
Significant Unobserved Inputs (Level 3)
Fair value information related to assets
Liabilities	(130)
Significant Unobserved Inputs (Level 3) | Earnout contingent consideration liability
Fair value information related to assets
Liabilities	(130)
Money market funds
Fair value information related to assets
Assets	118	118
Money market funds | Quoted Prices in Active Markets (Level 1)
Fair value information related to assets
Assets	118	118
Other mutual funds
Fair value information related to assets
Assets	2,052	2,192
Other mutual funds | Quoted Prices in Active Markets (Level 1)
Fair value information related to assets
Assets	$ 2,052	$ 2,192