Summary of Financial Statement Preparation and Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2016	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Line Items]
Excess Tax Benefit from Share-based Compensation, Operating Activities	$ 700		$ 400
payroll taxes paid for employee stock awards		$ 1,231	$ (614)
Unamortized Debt Issuance Expense		$ 700		$ 500