Summary of Significant Accounting Policies - Acquisition of Accountable Health Solutions, Inc. (Details) - USD ($)		12 Months Ended
	Apr. 17, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Apr. 16, 2015
Business Acquisition [Line Items]
Cash payment for acquisition		$ 4,000,000	$ 0	$ 0
Common stock, par value (usd per share)		$ 0.04	$ 0.04
Term Loan [Member]
Business Acquisition [Line Items]
Loan amount		$ 5,000,000
2013 Loan and Security Agreement [Member]
Business Acquisition [Line Items]
Maximum borrowing capacity	$ 7,000,000				$ 10,000,000
Potential maximum borrowing capacity	12,000,000
Amendment fee	100,000
2015 Credit Agreement [Member] | Term Loan [Member]
Business Acquisition [Line Items]
Loan amount	5,000,000
Accountable Health Solutions, Inc Asset Purchase Agreement [Member]
Business Acquisition [Line Items]
Acquisition, purchase price	7,000,000
Cash payment for acquisition	$ 4,000,000
Common stock issued for acquisition (shares)	6,500,000
Common stock, par value (usd per share)	$ 0.04
Value of common stock issued	$ 3,000,000