Recent Accounting Pronouncements (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Operating lease right-of-use assets	$ 43,404
Operating lease liabilities	$ 44,452
Accounting Standards Update 2016-02 [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Operating lease right-of-use assets		$ 44,900
Operating lease liabilities		$ 46,100