Term Loan Agreements and Long Term Debt - Term Loan Agreement and Revolving Loan (Details)				3 Months Ended	12 Months Ended
	Oct. 26, 2016	Oct. 25, 2016 USD ($) item	Nov. 12, 2014 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Nov. 13, 2014
Debt Instrument [Line Items]
Exit fee percent		5.00%
Debt issuance costs				$ 26,429
Three Peaks Loan
Debt Instrument [Line Items]
Payments of Debt Extinguishment Costs		$ 2,300,000
MidCap Loan
Debt Instrument [Line Items]
Proceeds from issuance of debt		25,000,000
Debt issuance costs		800,000
Term Loan Agreement | Three Peaks Loan
Debt Instrument [Line Items]
Face amount			$ 25,000,000
Interest payable, percent			9.00%
Interest rate spread			1.00%
Effective interest rate (as a percent)						10.00%
Term Loan Agreement | MidCap Loan
Debt Instrument [Line Items]
Face amount		$ 21,000,000		$ 21,000,000	$ 21,000,000
Number of months requiring principal and interest payments | item		30
Interest payable, percent		8.00%		8.00%	8.00%
Interest rate spread		0.50%		0.50%	0.50%
Effective interest rate (as a percent)		0.25%		8.50%	8.50%
Revolver Credit facility
Debt Instrument [Line Items]
Interest payable, percent				5.00%
Revolver Credit facility | MidCap Loan
Debt Instrument [Line Items]
Interest payable, percent		4.50%		4.50%	4.50%
Interest rate spread		0.50%		0.50%	0.50%
Effective interest rate (as a percent)				5.00%	5.00%
Prepayment fee percent, year one	3.00%
Prepayment fee percent, year two	2.00%
Prepayment fee percent, thereafter	1.00%
Maximum line of credit amount		$ 10,000,000		$ 10,000,000	$ 10,000,000
Collateral management fee, percent		0.50%
Unused line fee, percent		0.50%
Percent of Borrowing Base which accrues interest		30.00%
Revolver Credit facility | MidCap Loan | Maximum
Debt Instrument [Line Items]
Maximum line of credit amount		$ 15,000,000