Income Taxes Income Tax Reconciliation of Effective Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reconciliation of Effective Tax Rate [Abstract]
Effective Income Tax Rate Reconciliation, Federal taxes at statutory rate	$ 29,671	$ 42,113	$ 32,125
Effective Income Tax Rate Reconciliation, State and local taxes – net of federal tax benefit	5,636	3,420	3,652
Effective Income Tax Rate Reconciliation, Change in state NOL deferred asset – net of federal tax benefit	0	0	729
Effective Income Tax Rate Reconciliation, Deferred asset re-measurement as a result of Tax Act	0	6,520	0
Effective Income Tax Rate Reconciliation, Equity Compensation	(254)	(1,368)	0
Effective Income Tax Rate Reconciliation, Manufacturing deduction	0	(3,262)	(1,298)
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	(2,817)	0	0
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	1,390	820	(32)
Provision (benefit) from income taxes	$ 33,626	$ 48,243	$ 35,176