Income Taxes - Summary of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Long-term deferred tax assets
Goodwill, other intangibles and other assets and liabilities	$ 52,385	$ 90,686
Imputed interest deduction pursuant to tax receivable agreements	3,052	8,483
Rent liabilities	1,878	2,037
Compensation and benefits	526	1,606
Allowance for doubtful accounts	687	979
Motto contingent liability	929	1,405
Deferred revenue	171
Other	393	855
Total long term deferred tax assets US and Canada	60,021	106,051
Long-term deferred tax liabilities
Property and equipment and other long-lived assets	(1,021)	(414)
Net long-term deferred tax assets	59,000	105,637
Total long-term deferred tax liabilities	(1,021)	(414)
Total deferred tax assets and liabilities	$ 59,000	$ 105,637