Long Term Bank and Other Debt - Summary (Details)				1 Months Ended			12 Months Ended
	Jul. 24, 2015 item $ / shares	Jul. 15, 2015 USD ($)	May 02, 2014 item $ / shares shares	Jul. 31, 2016 USD ($) item $ / shares shares	Apr. 30, 2015 USD ($)	May 31, 2014 USD ($) item $ / shares shares	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 09, 2016 $ / shares	Jan. 01, 2016	Dec. 22, 2015 $ / shares	Jul. 14, 2015 USD ($)
Long-term bank and other debt
Total							$ 44,424,000	$ 26,477,000
Less: current portion							(2,000,000)	(1,250,000)
Long term bank and other debt							42,424,000	25,227,000
Drawdown on facility							34,990,000	6,800,000	$ 19,700,000
Fair value of warrants issued, resulting in an increase to additional paid in capital							7,717,000		$ 219,000
Amortization of warrants and loss on extinguishment of debt							8,454,000
Amortization of warrants							7,717,000	798,000
Common stock warrants
Long-term bank and other debt
Exercise price of warrants (in dollars per share) | $ / shares												$ 2.95
Amended and Restated Loan and Security Agreement, May 2014 | Maximum
Long-term bank and other debt
Previous deferred loan costs remaining to be amortized							100,000
Term Loan facility | SVB
Long-term bank and other debt
Total								4,167,000
Revolving Advance facility | SVB
Long-term bank and other debt
Total								6,500,000					$ 11,500,000
Maximum borrowings						$ 12,000,000
Borrowing base as percentage of monthly recurring revenue						300.00%
Repayments		$ 5,000,000
Revolving Advance facility | SVB | WSJ Prime Rate
Long-term bank and other debt
Basis spread on variable rate (as a percent)						0.75%
Mezzanine Term Loan | SVB
Long-term bank and other debt
Debt discount							0	190,000
Total							25,000,000	12,810,000
Face amount				$ 25,000,000
Loan origination fee				250,000
Final payment fee payable				$ 750,000
Mezzanine Term Loan | SVB | WSJ Prime Rate
Long-term bank and other debt
Basis spread on variable rate (as a percent)				6.25%
Floor interest rate of reference rate (as a percent)				3.75%
Original Mezzanine Term Loan
Long-term bank and other debt
Extinguishment of debt							13,000,000
Original Mezzanine Term Loan | SVB
Long-term bank and other debt
Face amount						$ 13,000,000
Interest rate (as a percent)						10.00%
Original Mezzanine Term Loan | SVB | Common stock warrants
Long-term bank and other debt
Number of affiliates of lender granted warrants | item						2
Number of shares that may be exercised from warrants | shares						131,239
Exercise price of warrants (in dollars per share) | $ / shares						$ 2.95
Term of warrants						10 years
Line of credit | SVB
Long-term bank and other debt
Debt discount							66,000	0
Total							17,424,000
Maximum borrowings				$ 25,000,000
Borrowing capacity of the Uncommited Incremental Facility				25,000,000
Loan origination fee				75,000
Additional annual fee				75,000
Arrangement fee if and when the Company utilizes the Uncommitted Incremental Facility				$ 50,000
Borrowing base as percentage of monthly recurring revenue				300.00%
Line of credit | SVB | WSJ Prime Rate
Long-term bank and other debt
Basis spread on variable rate (as a percent)				0.50%
Line of credit | Term Loan facility | SVB
Long-term bank and other debt
Total								5,000,000
Maximum borrowings						$ 5,000,000
Line of credit | Term Loan facility | SVB | WSJ Prime Rate
Long-term bank and other debt
Basis spread on variable rate (as a percent)						1.00%
Subordinated Promissory Note
Long-term bank and other debt
Total							2,000,000	3,000,000
Subordinated Promissory Note | AmeriDoc
Long-term bank and other debt
Interest rate (as a percent)					10.00%						7.00%
Debt incurred upon acquisition					$ 3,500,000
Repayment of debt							1,000,000	$ 500,000
Current debt outstanding							$ 2,000,000
Affiliates of SVB | Common stock warrants
Long-term bank and other debt
Number of affiliates of lender granted warrants | item	1		2	2
Number of shares that may be exercised from warrants | shares			131,239	798,694
Exercise price of warrants (in dollars per share) | $ / shares	$ 2.95		$ 2.95	$ 13.50						$ 13.50
Term of warrants			10 years	10 years
Fair value of warrants issued, resulting in an increase to additional paid in capital				$ 7,700,000