Recently Issued Accounting Pronouncements (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease liabilities	$ 43,892
Operating lease right of use assets	$ 41,800
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease liabilities		$ 45,700
Operating lease right of use assets		43,800
Cumulative adjustment not recorded		$ 1,900