New Accounting Standards (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
Right of use operating lease assets	$ 36,631
Operating lease liability	10,334
Long-term operating lease liabilities	$ 26,297
Accounting Standards Update 2016-02 [Member]
Right of use operating lease assets		$ 38,900
Operating lease liability		10,200
Long-term operating lease liabilities		$ 28,700