Acquisition - Preliminary purchase price allocation (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Apr. 17, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill	$ 633		$ 0
Accountable Health Solutions, Inc Asset Purchase Agreement [Member]
Business Acquisition [Line Items]
Accounts receivable, net of allowance of $2		$ 918
Inventory and other current assets		117
Fixed assets		123
Goodwill		633
Accounts payable and accrued expenses		(743)
Deferred revenue		(296)
Purchase Price		7,000
Accounts receivable, allowance		2
Portal [Member] | Accountable Health Solutions, Inc Asset Purchase Agreement [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets		4,151
Customer Relationships [Member] | Accountable Health Solutions, Inc Asset Purchase Agreement [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets		$ 2,097