New Accounting Pronouncements - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets	$ 76,548	$ 85,068	$ 0
Operating lease liabilities	89,876	95,348
ASC Topic 842 (Leases)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets		85,068
Operating lease liabilities		$ 95,000
Canada | Accounting Standards Update 2017-04
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Goodwill impairment	$ 7,300