Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Assets	$ 217,323
Liabilities	142,520
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Assets	2,000	$ 3,800
Liabilities	$ 1,900	$ 3,800