Summary of Significant Accounting Policies Future Minimum Rental Payments (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Accounting Policies [Abstract]
2019	$ 13,991
2020	13,710
2021	13,395
2022	12,554
2023	9,489
Thereafter	55,780
Total	$ 118,919

Operating and Capital Leases, And Lease Assumption Liabilities, Future Minimum Payments

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Operating and Capital Leases, And Lease Assumption Liabilities, Future Minimum Payments, Due After Five Years

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Operating and Capital Leases, And Lease Assumption Liabilities, Future Minimum Payments, Due in Five Years

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Operating and Capital Leases, And Lease Assumption Liabilities, Future Minimum Payments, Due in Four Years

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Operating and Capital Leases, And Lease Assumption Liabilities, Future Minimum Payments, Due in Next Twelve Months

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Operating and Capital Leases, And Lease Assumption Liabilities, Future Minimum Payments, Due in Three Years

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Operating and Capital Leases, And Lease Assumption Liabilities, Future Minimum Payments, Due in Two Years

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