Business Combination - Allocation of Purchase Price (Details) - USD ($) $ in Thousands	Jan. 08, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Goodwill		$ 140,449	$ 168,449	$ 0
Contingent consideration		$ (586)	$ (1,120)
Healthland Holding, Inc.
Business Acquisition [Line Items]
Cash consideration, net of acquired cash received	$ 162,611
Fair value of common stock and options issued as consideration	97,017
Total consideration	259,628
Acquired cash	5,371
Accounts receivable	5,789
Financing receivables	2,184
Inventories	216
Prepaid expenses	3,228
Property and equipment	1,263
Intangible assets	117,300
Goodwill	168,449
Accounts payable and accrued liabilities	(17,490)
Deferred taxes, net	(4,010)
Contingent consideration	(1,620)
Deferred revenue	(15,681)
Net assets acquired	$ 264,999