Basis of Presentation and Changes in Significant Accounting Policies (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Jan. 01, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred income taxes	$ 18,136		$ 14,726
New Accounting Pronouncement, Early Adoption, Effect | Accounting Standards Update 2016-16
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Prepaid income taxes		$ (11,700)
Deferred income taxes		9,700
Retained earnings		$ 2,000