Current Liabilities and Debt Obligations, Enlightenment Capital Credit Agreement (Details) - USD ($)		3 Months Ended			6 Months Ended
	Jan. 25, 2017	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Apr. 18, 2017
Accounts Payable and Other Accrued Payables [Abstract]
Trade account payables		$ 10,500,000			$ 10,500,000		$ 15,400,000
Accrued trade payables		3,100,000			3,100,000		10,300,000
Long-term Debt [Abstract]
Senior term loan principal, including exit fee		11,825,000			11,825,000		11,825,000
Less: Unamortized discount, debt issuance costs, and lender fees		(944,000)			(944,000)		(1,039,000)
Senior term loan, net		10,881,000			10,881,000		$ 10,786,000
Interest expense		$ 400,000	$ 400,000
Credit Agreement [Member]
Enlightenment Capital Credit Agreement [Abstract]
Increase in interest rate		1.00%
Credit agreement exit fee		$ 825,000			$ 825,000
Effective interest rate		15.00%			15.00%
Credit agreement transaction costs					$ 374,000
Long-term Debt [Abstract]
Interest expense					$ 800,000	$ 700,000
Porter [Member]
Enlightenment Capital Credit Agreement [Abstract]
Maturity date				Jul. 01, 2017	Jul. 25, 2022
Aggregate redemption price								$ 2,112,000
Enlightenment Capital Solutions Fund, II L.P. [Member] | Class A Common Stock [Member]
Enlightenment Capital Credit Agreement [Abstract]
Warrants issued to purchase shares of common stock (in shares)	1,135,284.333
Common stock par value (in dollars per share)	$ 0
Percentage of warrants issued of common equity interests	2.50%
Warrants exercise price (in dollars per share)	$ 1.321
Warrants expiration date					Jan. 25, 2027
Emmett J. Wood [Member] | Class A Common Stock [Member]
Long-term Debt [Abstract]
Number of shares held by related party (in shares)		810,000			810,000
Emmett J. Wood [Member] | Class A Common Stock [Member] | Credit Agreement [Member]
Long-term Debt [Abstract]
Number of shares held by related party (in shares)		50,000			50,000
Term Loan [Member] | Enlightenment Capital Solutions Fund, II L.P. [Member]
Enlightenment Capital Credit Agreement [Abstract]
Senior term loan	$ 11,000,000
Maturity date					Jan. 25, 2022
Accrual rate	13.00%
Increase in interest rate	14.50%
Increase in interest rate in event of default	2.00%
Monthly accrued interest rate	10.00%
Monthly accrued interest rate during continuance of an Alternate Interest Rate Event	11.50%
Number of days prior written notice					30 days
Proceeds from loan prepayment	$ 1,100,000