Other Long-Term Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Cash surrender value of corporate-owned life insurance policies	$ 4,214		$ 3,596
Deferred commissions	22,068		15,530
Restricted cash	56		661
Operating lease assets	9,653
Prepaid expenses, deposits and other	4,218		3,212
Total other long-term assets	$ 40,209	$ 35,482	$ 22,999