Basis and Summary of Significant Accounting Policies - Accounts Receivable Net of Allowances (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable	$ 84,822	$ 95,777
Customers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable	36,782	36,227
Corporate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable	21,397	26,375
Franchisee
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable	$ 26,643	$ 33,175