Leases - Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 33,725	$ 35,436	$ 34,324
Operating - current	7,603		6,256
Operating - noncurrent	26,084	$ 27,930	28,878
Total operating lease liabilities	33,687		35,134
Property and equipment, gross	3,566		3,569
Accumulated amortization	(2,903)		(2,255)
Property and equipment, net	663		1,314
Other current liabilities	1,125		1,098
Other long-term liabilities	6		1,319
Total finance lease liabilities	$ 1,131		$ 2,417