Current Liabilities and Debt Obligations (Details) - USD ($)				12 Months Ended
	Mar. 31, 2018	Jan. 25, 2017	Jul. 15, 2016	Dec. 31, 2017	Dec. 31, 2015	Apr. 18, 2017	Dec. 31, 2016
Accounts Payable and Other Accrued Payables [Abstract]
Trade account payables				$ 15,400,000			$ 12,100,000
Accrued trade payables				10,300,000			$ 3,200,000
Long-term Debt [Abstract]
Senior term loan principal, including exit fee				11,825,000
Less: Unamortized discount, debt issuance costs, and lender fees				(1,039,000)
Senior term loan, net				10,786,000
Subsequent Events [Member]
Accounts Payable and Other Accrued Payables [Abstract]
Increase in interest rate	1.00%
Credit Agreement [Member]
Accounts Payable and Other Accrued Payables [Abstract]
Credit agreement exit fee				$ 825,000
Effective interest rate				15.00%
Credit agreement transaction costs				$ 374,000
Long-term Debt [Abstract]
Interest expense				$ 1,500,000
Porter [Member]
Accounts Payable and Other Accrued Payables [Abstract]
Maturity date				Jul. 25, 2022	Jul. 01, 2017
Aggregate redemption price						$ 2,112,000
Enlightenment Capital Solutions Fund II LP [Member] | Class A Common Stock [Member]
Accounts Payable and Other Accrued Payables [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			650,000
Emmett J. Wood [Member] | Class A Common Stock [Member] | Subsequent Events [Member]
Long-term Debt [Abstract]
Number of shares held by related party (in shares)	50,000
Emmett J. Wood [Member] | Common Class A and Class B [Member] | Subsequent Events [Member]
Long-term Debt [Abstract]
Number of shares held by related party (in shares)	50,000
Term loan [Member] | Enlightenment Capital Solutions Fund II LP [Member]
Accounts Payable and Other Accrued Payables [Abstract]
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 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
Long-term Debt [Abstract]
Senior term loan, net		$ 11,000,000
Term loan [Member] | Enlightenment Capital Solutions Fund II LP [Member] | Minimum [Member]
Accounts Payable and Other Accrued Payables [Abstract]
Monthly accrued interest rate				10.00%
Republic Capital Access LLC [Member] | Accounts Receivable Purchase Agreement [Member]
Accounts Receivable Purchase Agreement [Abstract]
Limit of outstanding purchased receivables			$ 10,000,000
Automatic renewal term				12 months
Percentage of initial purchase price of purchased receivable			85.00%
Residual percentage of purchased receivable			15.00%
Percentage of discount factor for federal government prime contracts			0.30%
Percentage of discount factor for non-federal government investment grade account obligors			0.56%
Percentage of discount factor for non-federal government non-investment grade account obligors			0.62%
Percentage of program access fee			0.008%
Percentage of commitment fee			1.00%
Proceeds from purchase agreement			$ 6,300,000
Initial enrollment fee			$ 25,000
Republic Capital Access LLC [Member] | Accounts Receivable Purchase Agreement [Member] | US Government Agency [Member]
Accounts Receivable Purchase Agreement [Abstract]
Percentage of initial purchase price of purchased receivable			90.00%
Residual percentage of purchased receivable			10.00%