Long Term Bank and Other Debt - Summary (Details)				1 Months Ended		3 Months Ended	6 Months Ended		12 Months Ended
	Jul. 13, 2017 USD ($)	Jan. 31, 2017 $ / shares shares	Dec. 09, 2016 $ / shares shares	Jul. 31, 2016 USD ($) item $ / shares shares	Apr. 30, 2015 USD ($)	Mar. 31, 2017 USD ($)	Jun. 30, 2017 USD ($) shares	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($) shares	Jul. 14, 2017 USD ($)	Jan. 01, 2016
Long-term bank and other debt
Total							$ 42,440,000		$ 44,424,000
Less: current portion									(2,000,000)
Long term bank and other debt							42,440,000		42,424,000
Drawdown on facility								$ 5,500,000
Repayment of debt							2,000,000	$ 625,000
SVB | Subsequent Event
Long-term bank and other debt
Early termination fees and final deferred origination fees	$ 1,700,000
Amended and Restated Loan and Security Agreement, May 2014
Long-term bank and other debt
Previous deferred loan costs remaining to be amortized				$ 100,000
New Revolving Credit Facility | Subsequent Event
Long-term bank and other debt
Maximum borrowings										$ 10,000,000
New Term Loan Facility | Subsequent Event
Long-term bank and other debt
Maximum borrowings										$ 175,000,000
Mezzanine Term Loan | SVB
Long-term bank and other debt
Total							25,000,000		25,000,000
Face amount				25,000,000
Loan origination fee				250,000
Final payment fee payable				$ 750,000
Mezzanine Term Loan | SVB | Subsequent Event
Long-term bank and other debt
Repayment of debt	25,000,000
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%
Line of credit | SVB
Long-term bank and other debt
Debt discount							50,000		66,000
Total							$ 17,440,000		17,424,000
Maximum borrowings				$ 25,000,000
Borrowing base as percentage of monthly recurring revenue				300.00%
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
Line of credit | SVB | Subsequent Event
Long-term bank and other debt
Repayment of debt	$ 17,500,000
Line of credit | SVB | WSJ Prime Rate
Long-term bank and other debt
Basis spread on variable rate (as a percent)				0.50%
Subordinated Promissory Note
Long-term bank and other debt
Total									2,000,000
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						$ 2,000,000			$ 1,000,000
Affiliates of 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				798,694
Exercise price of warrants (in dollars per share) | $ / shares		$ 13.50	$ 13.50	$ 13.50
Term of warrants				10 years
Fair value of warrants outstanding				$ 7,700,000
Number of shares issued upon exercise of warrants | shares		138,903	107,931
Cashless exercise of warrants (in shares) | shares		399,347	399,347
Warrants outstanding (in shares) | shares							0		399,347