Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		$ 88,795
Finance lease right-of-use assets	$ 1,005
Property, plant and equipment, gross	72,289
Less: Accumulated depreciation and amortization		(44,576)
Less: Accumulated depreciation and amortization	(52,554)
Property, plant and equipment, net		44,219
Property, plant and equipment, net	19,735
Building and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	0	33,277
Capitalized internal-use software development costs
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	44,194	35,201
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,861	3,557
Computers and computer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	14,836	11,676
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 8,393	$ 5,084